Sacher Lasertechnik Pilot PC User Manual

Sacher Lasertechnik

Group

Pilot PC Laser Driver

User Manual

http://www.sacher-laser.com

Sacher Lasertechnik

Warranty

Group

Service

This Sacher Lasertechnik

Group

product is warranted against defects in
materials and workmanship for a period of three years from date of
shipment.
Duration and conditions of warranty for this product may be superceded
when the product is integrated into (becomes a part of)other Sacher
Sacher Lasertechnik
Lasertechnik

Group

Group

products. During the warranty period, Sacher

will, at its option, either repair or replace products
which prove to be defective.
The warranty period begins on the date of delivery or on the date of
installation if installed by Sacher Lasertechnik

Group

.

This warranty is in lieu of all other guarantees expressed or implied and
does not cover incidental or consequential loss.

Copyright 2008, Sacher Lasertechnik

Group

. All rights reserved.

Information and advice about the performance or operation of Sacher
Lasertechnik

Group

products is available from our web site and our
applications engineers.
For quickest response ask for ‘Technical Support’ and have your model
and serial number available. Support is available by:

Sacher Lasertechnik

Group

Rudolf-Breitscheid-Str. 1-5
35037 Marburg, Germany
Tel: [phone] – 0, Fax: [phone] - 299
[e-mail]
or
5765 Equador Way
Buena Park, CA 90620
USA
Tel.: [phone], Fax: [phone]

User Manual Laser Diode Controller PilotPC Printed: Sep-10

Part Number:

Sacher Lasertechnik

Content

Group

General Information 2

General Description ....................................................2

Block Diagram............................................................3

Environmental Setting Up Conditions........................6

Rear Side ON/OFF Keyswitch.................................... 6

Other Laser Safety Components................................. 6

Getting Started............................................................7

Interlock Port ............................................................12

PE Switch..................................................................13

Housing Description 14

Front Panel................................................................15

Rear Panel................................................................. 16

Rear Panel Piezo Option........................................... 17

Menus 18

Main Menu................................................................23

LD Current Menu...................................................... 23

Laser Setup................................................................ 25

IU-Scan Laser Setup .................................................26

LD-Power Menu ....................................................... 27

LD TEMP Menu.......................................................28

Temp Setup............................................................... 29

Scan - Menu.............................................................. 30

Current Coupling Setup ............................................ 32

Diagnostic Menu....................................................... 33

System Settings Menu...............................................33

System Info Menu.....................................................36

Driver Secure / Unsecure..........................................37

Specifications 38

Laser Diode Controller PilotPC 500.........................38

Laser Diode Controller PilotPC 3000.......................40

Laser Diode Controller PilotPC 4000.......................42

Piezo Driver Option.................................................. 44

User Manual Laser Diode Controller PilotPC Printed: Sep-10

Part Number:

Sacher Lasertechnik

Group

Operation of Laser Diode Controller

Appendix 45

Connector Schematics............................................... 45

Error Codes............................................................... 52

Safety Symbols ......................................................... 53

Fuse Replacement and Voltage Selection................. 54

Declaration of Conformity........................................ 55

Technical Support..................................................... 56

User Manual Laser Diode Controller PilotPC 1

Sacher Lasertechnik

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General Information

General Description

The PilotPC Laser Driver is a highly precise controller for laser diodes.
The laser current or the optical output power and the temperature of the
connected laser diode can be precisely regulated.
In case of the piezo option also the piezo voltage could be controlled.

The laser driver is managed by a modern 16 Bit ucontroller with
internal flash memory. So it is possible to update the firmware of the
driver.
The main focus, when designing the driver, was, to give the customer a
low noise laser driver. The output power stage of the laser driver is not
designed in switchmode power supply technology.
This causes some more thermal power losses and makes a internal fan
necessary.
The PilotPC power stage is a further development of our previous
design which is working since more then 10 years in Sacher
Lasertechnik products. So we are sure to give you a high quality and
well approved instrument.

For automated control, a GPIB/IEEE-488.2 , a RS232 and a USB
interface allows remote programming and readout from personal
computers. All instrument functions accessible from the front panel are
also accessible through the interface bus, allowing control or testing of
the laser system. In addition, a LabVIEW® instrument driver is
available free upon request.

For quick and easy operation without confusing multilayer menus, the
front panel of the PilotPC is divided into two major sections, TEC and
LASER Control. The display section allows monitoring of control
parameters for TEC (Thermo electric cooler) and laser diode.

The PilotPC incorporates proven laser protection features, including
exclusive clamping current limits, output shorting circuits and slow­start turn-on. In addition, power-line transients are suppressed with AC
line filters .

User Manual Laser Diode Controller PilotPC 2

Sacher Lasertechnik

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Block Diagram

Simplified Laser Current Control Block Diagram

As shown in the block diagram the laser current source is controlled by
the uController. Current control loop and power control loop is build in
hardware. Only the set values are given by special DAC units. The
uController also has several supervising functions like

- Diagnostic

- Monitoring

- Protection

Some supervising features are

- Wiring resistance measurement

- 16Bit LD Voltage measurement

- Softstart

- Laserpower calculation

12 Bit LOW Noise
DAC

I/P-Mode

14 Bit LOW Noise
DAC

uController Unit

16 Bit High Speed
ADC

Limit Open Load

Compliance
Voltage
Control

LD Current
Control

LD Power
Control

Detection

LD Current
Source

PD Amplifier

Polarity
Control

User Manual Laser Diode Controller PilotPC 3

Sacher Lasertechnik

AD590 Current to Voltage Transmitter

Group

Simplified Temperature Control Block Diagram

The main temperature control blocks are build in software.
This has some advantages for the user.

- free programmable PID Setup

- free programmable current limit

Also some diagnostic features are implemented to protect the laser
diode

- Open load detection of TEC

- Bad heat sink detection

- temp watch window supervising

- Open/ short circuit detection in sensor lines

uController Unit

Open Load
Detection

Limit

PID Controller

Sensor Control

Diagnostics

12 Bit DAC

16 Bit High Speed
ADC

TEC Current
Control

TEC
Current
Source

NTC Signal Amplification

User Manual Laser Diode Controller PilotPC 4

Sacher Lasertechnik

Amplitude

u

C

o

n

o

e

r

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Piezo Control Block Diagram

The piezo driver is an option for the PilotPC useful for many TDLS. It
can be equipped with the original configuration or upgraded at a later
point of time.
When the piezo driver is installed the PilotPC will automatically detect
the board and activate the additional menus which are available under
the “Scan” Button.

The main piezo features are

- build in DDS function generator

- High resolution offset adjust

- continuous frequency and amplitude adjust

External Modulation Input

High Resolution

DAC

t

Offset Control

FG Enable

Freq. Adjust

+

Piezo Enable

Piezo
Amplifier

r
l

l

Function

Generator

Waveform Select

Diagnostic

User Manual Laser Diode Controller PilotPC 5

Sacher Lasertechnik

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Environmental Setting Up Conditions

The Laser Driver should placed in horizontal condition.
The user must take care that the Key Switch is not blocked (could easily
reached by the user)

The user must take care that the fan output on the rear side is not
blocked.

Rear Side ON/OFF Keyswitch

The key switch disconnects the main power supply from the driver.

The switch acts as security feature to prevent user for dangerous laser
light.
The key switch also acts as an general ON/OFF switch witch should be
used (opened) when the driver is not used.

The laserdiode current source should be shut down before the key
switch is opened. Otherwise load dump pulses could damage the
laserdiode

The key is only removable in “OFF” position.

Other Laser Safety Components

Acoustical warning

Before laser emission starts, an acoustical warning will happen.
A beep sound will come every second. The warning time is adjustable
by user . The minimum ON-delay is 2 seconds.

Laser Emission indicator lamp

A red LED indicator lamp on the front panel in the Laser ON/OFF
button will blink while the acoustical warning time is running and
will be switched ON when the laser is on.

When the PilotPC is switched ON a lamp test switch ON every
indicator lamp on the front panel.

Interlock Port

The interlock port acts as a security feature.
If the interlock loop is opened the laser current source will be disabled.
For a more detailed description see chapter interlock port.

Laser Emision indicator lamp

User Manual Laser Diode Controller PilotPC 6

Sacher Lasertechnik

Pilot

Laser

heat sink

piezo input

Group

Getting Started

The laser system consists of an electronic controller unit – the PilotPC –
and an external laser head. This configuration allows flexible use of the
laser system possible since the laser head can be positioned freely in an
optical setup.
Laser and controller are connected by two cables, which allows the
controller to be include in a rack.
This modular design enables you to switch wavelengths simply by
changing the laser head (heads are available separately).

MOD input

User
interface

Laser
output

User Manual Laser Diode Controller PilotPC 7

Sacher Lasertechnik

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Laser Diode Configurations

The laser diode is connected over the “LASER CONNECTOR” on the
rear panel of the driver. To get the full performance and safety please
only connect a special laser head from Sacher Lasertechnik.
These laser heads incorporate several features.

- Short circuit relay for the laser diode

- Input filter network for current transient protection

- Interlock loop

- bias-T option for high frequency modulation

- separate calibrated photodiode for const power mode (only for high
power TIGER systems)

For maximum flexibility and laser safety the driver supports 4 different
laser diode configurations which are shown in the following schematics.

Configuration 1 (common cathode)

Laser Diode

Laser Diode Controller

2

4
7

8

3

9

6

1

5

S

Safety

Relay Control

Interlock

Control

Constant Current/Power

Controller

1 = Interlock
2 = Photodiode Cathode
3 = Ground for Laser Diode
4 = Photodiode Anode
5 = GND for Interlock
6 = Safety Relay Plus
7 = Laser Diode Minus
8 = Laser Diode Plus
9 = Safety Relay Minus
S = Shielding

User Manual Laser Diode Controller PilotPC 8

Sacher Lasertechnik

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Configuration 2

Laser Diode

S

Configuration 3

Laser Diode Controller

2

4
7

8

3

9

6

1

5

Safety

Relay Control

Interlock

Control

Constant Current/Power

Controller

1 = Interlock
2 = Photodiode Cathode
3 = Ground for Laser Diode
4 = Photodiode Anode
5 = GND for Interlock
6 = Safety Relay Plus
7 = Laser Diode Minus
8 = Laser Diode Plus
9 = Safety Relay Minus
S = Shielding

Laser Diode

Laser Diode Controller

2

4
7

8

3

9

6

1

5

S

Safety

Relay Control

Interlock

Control

Constant Current/Power

Controller

1 = Interlock
2 = Photodiode Cathode
3 = Ground for Laser Diode
4 = Photodiode Anode
5 = GND for Interlock
6 = Safety Relay Plus
7 = Laser Diode Minus
8 = Laser Diode Plus
9 = Safety Relay Minus
S = Shielding

User Manual Laser Diode Controller PilotPC 9

Sacher Lasertechnik

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Configuration 4 (common anode)

Laser Diode

Laser Diode Controller

2

4
7

8

3

9

6

1

5

S

Safety

Relay Control

Interlock

Control

Constant Current/Power

Controller

1 = Interlock
2 = Photodiode Cathode
3 = Ground for Laser Diode
4 = Photodiode Anode
5 = GND for Interlock
6 = Safety Relay Plus
7 = Laser Diode Minus
8 = Laser Diode Plus
9 = Safety Relay Minus
S = Shielding

For proper and safety operation you have to select the right laser setup
settings in the LASER SETUP menu.
The following list gives you the correct polarity setting.

Configuration Polarity

Configuration 1 (common cathode) Positive
Configuration 2 Negative
Configuration 3 Positive
Configuration 4 (common anode) Negative

User Manual Laser Diode Controller PilotPC 10

Sacher Lasertechnik

TEC Module

AD590 Temp.

Transducer

NTC

Group

TEC / Temperature Sensor Configurations

TEC and temperature sensor are connected over the “TEC
CONNECTOR” on the rear panel.

The laser driver supports two different types of sensor.

- AD590 (temperature Transducer)

- 10K NTC (Thermistor)
The sensor could be selected in the “Temp Setup Menu”

For best operation of the temperature controller the right PID Settings
must be found. This could be done by testing or calculating the TEC
and laser head behavior.
For testing and qualifying the heating / cooling process the laserdriver
provides test functions where the user easily could calculate process
response time and amplification.
The temperature controller is internal realized as a PID controller, so
the user has to setup 3 parameters.

TEC Configuration

TEC Controller

2

3

9

6

Voltage
Reference

1 = n.c.
2 = Temperature Sensor AD590 Plus
3 = Temperature Sensor AD590 Minus
4 = n.c.
5 = n.c.
6 = GND
7 = TEC Element GND
8 = TEC Element Output
9 = NTC Sensor Plus
S = Shielding

8

7

5
1
4

S

Temperature

Controller

Set Point

User Manual Laser Diode Controller PilotPC 11

Sacher Lasertechnik

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Interlock Port

The interlock port is one of several safety features.

The port acts as input port for a safety contact and as an indicator port
which could drive a LED.

The port is internally hardwired to the laser power supply so that an
open interlock loop will directly cause a shut down of the laser.

Possible Interlock Configurations

Safety Swich

Optical coupled Output

User Manual Laser Diode Controller PilotPC 12

Sacher Lasertechnik

PE Switch

Group

IEC Line Connector

PE Switch

The PE switch is used to improve the noise behavior of the laserdiode
current source. In some cases, especially when external measurement
equipment is connected to the laserhead or the laserdriver, line
frequency noise comes up.
Sometimes it helps to open the PE Switch.

Switch Pos.

S Electronic Ground of the Laserdiodedriver

are connected to PE (Protective Earth) with high
resistance

PE Electronic Ground of the Laserdiodedriver

are connected to PE (Protective Earth) with low
resistance

PilotPC

Laserdiode

Current Source

User Manual Laser Diode Controller PilotPC 13

Sacher Lasertechnik

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Housing Description

User Manual Laser Diode Controller PilotPC 14

Sacher Lasertechnik

Dial + Button

On/Off

MODE

P MODE

TEC

T SET

T WATCH

DISPLAY

Front Panel

LINE

Group

This section shows the front-panel elements.
The front panel consists of a blue graphic display and a foil keypad-

List of Front panel Elements

Element Description

Line Button To switch the driver ON/OFF
Graphic Display
Incremental jog
Menu Button
Laser ON/OFF Button

To switch the laser ON/OFF
with Laser Warning Indicator
I-Mode Button Constant current mode
P-Mode Button Constant power mode
SCAN Button Sets Scan Options
I-Tec Button To switch the TEC (Thermo Electric

Coolser ON OFF)
T-Set Button Sets the laser diode temperature
T-Watch Button Switch the T-Watch Mode ON /OFF

(Laser is only working when

Temperature is within a given limit)

GRAPHIC

Inkremental Jog

MENU

Laser

I

SCAN

I

User Manual Laser Diode Controller PilotPC 15

Sacher Lasertechnik

2 3

4 1

5

9

6

7

8

A

B

Rear Panel

Group

This section shows the rear panel elements.
On this side you find all connectors.

List of Rear Panel elements

Element Description

1 RS232 Interface Connector
2 GBIB Interface Connector
3 PE Switch
4 Safety Interlock Connector
5 Key Switch
6 USB Interface Connector
7 Piezo Input/Output Connector
8 Laser Connector
9 TEC Connector
A Current/Power Signal Modulation Input
B Current/Power Signal Monitor Output

User Manual Laser Diode Controller PilotPC 16

Sacher Lasertechnik

2

3

4 1

5

9

6

7 8

A

B

C

D

Group

Rear Panel Piezo Option

This section shows the rear panel elements.
On this side you find all connectors.

List of Rear Panel elements

Element Description

1 RS232 Interface Connector
2 GBIB Interface Connector
3 PE Switch
4 Safety Interlock Connector
5 Key Switch
6 USB Interface Connector
7 Piezo Input/Output Connector
8 Laser Connector
9 TEC Connector
A Current/Power Signal Monitor Output
B Frequency Gen.-Output Signal “External Mode”
C Piezo Modulation Input
D Piezo Sync Signal Output

User Manual Laser Diode Controller PilotPC 17

Sacher Lasertechnik

Menus

Group

Level II Menu structure

The menus are organized in a top down tree structure with 4 levels.

Main Menu

I-Mode Scan Temperature

Laser Setting

secure area

P-Mode

Scan Setting

Level I Main Menu

Level II

Level III Settings Menus unprotected level

Mode Menus

Temp Setting

Temp Setup System InfoScan SetupLaser Setup System

System
Setting

Diagnose

unprotected level
to adjust primary parameters
like laser current, temperature ,
piezo voltage

to adjust secondary parameters
like modulation enable, TEC enable,

User Manual Laser Diode Controller PilotPC 18

Sacher Lasertechnik

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Level IV Setup Menus protected level

to adjust limit parameters or
parameters witch could cause a
damage of the laser system

User Manual Laser Diode Controller PilotPC 19

Sacher Lasertechnik

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Menu buttons

The menu button is used to navigate between the different menus.

Leve II Level III

Menu

Menu

Level II Mode buttons

The menus are organized in a top down tree structure with 4 levels.
Level II menus are reached by pressing one of the mode buttons.

Mode buttons are

Each level II menu has the following structure.

Laser [mA]

SET 1234.5
ACT -1234.5

I-

Mode

p-

Mode

I-LD: 1234,5 mA
POS I-MODE LIM

TEC -4000 mA
AD590 21,00 °C
PZ FG CC EM
RM STA 12345

Scan

T

Set

Laser Status Field

TEC Status Field

System Status

Primary Mode
Settings /Values

User Manual Laser Diode Controller PilotPC 20

Sacher Lasertechnik

Group

Laser, TEC and System status field gives the user an direct overview in
every mode.

Laser Status Field

Laser Status field shows the user the most important laser parameters.
These are

- Laser Current (in I-Mode)

- Photodiode Current (in P-Mode)

- Laser Polarity
(POS = Cathode grounded LD /NEG = Anode grounded LD)

- Current Limiter active

TEC Status Field

TEC Status field shows the user the most important TEC parameters.
These are

- TEC Current

- TEC Temperature

- TEC Sensor

User Manual Laser Diode Controller PilotPC 21

Sacher Lasertechnik

Group

System Status

PZ FG CC EM
RM STA 12345

The system status field contains important labels which gives the user
information about specific options and an error code which is generated
by the driver diagnostic module.

Label Description Comment

TC Temperature Coupling
PZ Piezo Driver enabled
FG Function Generator enabled
CC Current coupling enabled
EM External Modulation enabled
RM Driver is in Remote Operation Mode is blinking when a non

valid command is sent

STA Error

Stored set values

All set values will be stored in a non volatile memory so that they are
still present after you turn the driver OFF

The set values are only stored when the driver is
switched OFF by the line switch at the front panel

occurs

Note!

Error code is explained
in the appendix chapter

User Manual Laser Diode Controller PilotPC 22

Sacher Lasertechnik

AD590 21,00

°

C

Group

Main Menu

This menu is just to select level II sub menu.
The jog dial is used to select the submenu and the jog dial button is to
enter the menu.

LD Current Menu

Main Menu

Laser
Temperature
Scan
Settings ?
System ?

Laser [mA]

SET 1234.5
ACT -1234.5

In dependence on the Laser Mode (const current or const. power) the
laser current could be adjusted.

Adjusting the current:

- Press the jog dial until the set value is highlighted

- adjust the current by turning the jog dial (current is immediately
changed)

- Press the jog dial until the set value is not highlighted

I-LD: 1234,5 mA
POS I-MODE LIM
TEC -4000 mA

PZ FG CC EM
RM STA 12345

User Manual Laser Diode Controller PilotPC 23

Sacher Lasertechnik

Laser Settings

Group

The following settings menu is displayed when the menu button is
pressed.

Ext.Modulation On
Ext.Monitor LD-Curr
PD Calibtation Table none
IU Characteris. Off
Mode I
Laser Setup ?
Piezo Scan ?
Main Menu ?
System ?
Diagnose ?

Label Description

Ext. Modulation Enables /disabled ext. monitor input
Ext. Monitor Switch ext monitor signal as current

or power indicator

PD Calibration Calibration table select to diplay true

LD Power value

Mode Sets constant power (P) or constant

current mode
Laser Setup Jump to laser setup menu
Piezo Scan Jump to piezo menu
Main Menu Jump to Main menu (Level I)
System Jump to system menu
Diagnosis Jump to diagnosis menu

User Manual Laser Diode Controller PilotPC 24

Sacher Lasertechnik

Laser Setup (Secure)

Laser Setup

Group

In the laser setup menu the user will find critical parameters which
could have influence on lifetime and reliability
Therefore this parameters could be secured.
When it is not allowed to change these settings the text “Secure” is
displayed on top of the menu.
How to lock and unlock is described in the programming manual.

I-Limit 4000 mA
Polarity Pos
U-Compliance 10.1 V
U-Relais 12.0 V
Cable Resistor 593 mΩ
TEC Requrired On

Label Description

I-Limit Sets the absolute max. current of the LD
Polarity Sets LD Polarity (see chapter Laser Diode

Configurations)

U-Compliance Compliance Voltage is the max input voltage

of the current source affects on the open
circuit detection

U-Relays Controls the supply voltage of the relay (Also

an analogue interface could be realized)

Cable Resistor Important for measuring the Laserdiode

Voltage. When selecting the value a self test
started and the cable resistance will be
calculated in mOhm

TEC Required Laser operation is only possible when TEC is

enabled

User Manual Laser Diode Controller PilotPC 25

Sacher Lasertechnik

Step 10.0

AD590 21,00

°

C

Group

IU-Scan Laser Setup

In this mode a single laser scan is initiated.
IU-Scan was build especially for a quick LD characterization.
The user has first to setup the Start,Stop,Step values.
With “Laser ON” the scan starts.
The Laser driver stores Laser Current, Laser Voltage, Photodiode
Current or Ext. Modulation Signal in a internal RAM table.
Over one of the remote Interfaces the data could be transferred to a PC.
The max. table size is 256 lines, 3 rows.

Laser [mA]

Start 0.0

Stop 600.0

ACT -1234.5

The following parameters could be set.

Label Description

Start Scan starting point
Step Scan Step size
Stop Scan stop point

I-LD: 1234,5 mA
POS I-MODE LIM
TEC -4000 mA

PZ FG CC EM
RM STA 12345

User Manual Laser Diode Controller PilotPC 26

Sacher Lasertechnik

AD590 21,00

°

C

Group

LD-Power Menu

Photodiode[uA]

SET 1234.5
ACT -1234.5

In dependence on the Laser Mode (const current or const. power) the
photo diode current or the laser power could be adjusted/displayed.

Adjusting the power:

- Press the jog dial until the set value is highlighted

- adjust the power by turning the jog dial (power is immediately
changed)

- Press the jog dial until the set value is not highlighted

Calibration Table

To display the laser power a internal cross table is used.
This table is predefined on a special laser system but could be changed
by the user over the remote interface. You find a detailed description
how change the cross table in the programming manual.

PD-current
[uA]

Crosstable

I-LD: 1234,5 mA
POS I-MODE LIM
TEC -4000 mA

PZ FG CC EM
RM STA 12345

Laser Power [mW]

User Manual Laser Diode Controller PilotPC 27

Sacher Lasertechnik

Temperature Settings

Group

LD TEMP Menu

In this menu the laser temperature set point and the actual temperature
are displayed.

Temperature[°C]

SET -20.000
ACT -20.000

I-LD: 1234,5 mA
POS I-MODE LIM
TEC -4000 mA

AD590 21,00 °C
PZ FG CC EM

RM STA 12345

Adjusting the temperature:

- Press the jog dial until the set value is highlighted

- adjust the temperature by turning the jog dial (temp is immediately
changed)

- Press the jog dial until the set value is not highlighted

The following settings menu is displayed when the menu button is
pressed.

TEC On
T-Watch On
T-Watch Window 5000 mK
Temp. Setup ?
Menu ?
System ?
Diagnose ?

Label Description

TEC Enables/Disables the temp controller
T-Watch Enables/Disables “T-Watch” function

This function supervised the
temperature of the laserdiode and shut
down the LD current source and
disables the laser when the
temperature is not in the watch
window. When “T-Watch” is enabled

the indicator lamp is on
T-Watch Window Sets “T-Watch” window
Temp Setup Jump to Temp Setup menu
Menu Jump to main menu
System Jump to system menu
Diagnose Jump to Diagnose menu

User Manual Laser Diode Controller PilotPC 28

Sacher Lasertechnik

Temperature Setup (Secure)

Temp Setup

Group

In the temp setup menu the user will find critical parameters which
could have influence on lifetime and reliability
Therefore this parameters could be secured.
When it is not allowed to change these settings the text “Secure” is
displayed on top of the menu.
How to lock and unlock is described in the programming manual.

Sensor AD590
ITEC-Limit 4000 mA
TEC Powerup On
TEC Polarity Pos
P (KR)
I (TN)
D (TV) 250.00 s

10.00 A/K

250.00 s

The following parameters could be set.

Label Description

Sensor The driver supports 10K NTC and AD590
I-TEC Limit Max. allowed current for the TEC
TEC Powerup TEC will be switched automatically on when

the driver powered up.

TEC Polarity In POS position the TEC cools the laser down

when a pos current is floating otherwise the

TEC warms the laser up
P (KR) PID Temp Controller parameter
I (TN) PID Temp Controller parameter
D (TV) PID Temp Controller parameter

User Manual Laser Diode Controller PilotPC 29

Sacher Lasertechnik

AD590 21,00

°

C

Group

Scan - Menu

In this menu the piezo functions are configured . In case that there is no
piezo module installed only the current coupling settings are displayed.

Piezo [V]

Ampl. 13.500
Offset -13.500

I-LD: 1234,5 mA
POS I-MODE LIM

TEC -4000 mA

PZ FG CC EM
RM STA 12345

Adjusting the Amplitude /Offset

- Press the jog dial until the set value is highlighted

- adjust the limit by turning the jog dial (I-limit is immediately changed)

- Press the jog dial until the set value is not highlighted

The following settings menu is displayed when the menu button is
pressed.

Scan Settings

Piezo On
Offset 10.000V
Frequ.Generator Sinus
Frequency 12.3 Hz
Frequ. Ampl. 13,00 V
Frequ.Mode Piezo/External
Curr-Coupling On
Gain 16.6 uA/V P-Mode
Prescale 6* ( 99.6 uA/V )
Direction Pos
Menu ?
System ?
Diagnose ?

User Manual Laser Diode Controller PilotPC 30

Label Description

Piezo Disables / enables the piezo driver
Offset Adjust Piezo DC Offset
Freq. Generator Disables / enables freq. generator
Frequency Sets the function generator frequency
Frequ. Ampl. Adjust Piezo Peak Amplitude
Frequ. Mode Sets function generator Output

to Piezo Driver or external FG.Out
Pin

Current - Coupling Disables / enables the current

coupling function
Gain Sets current coupling gain
Prescale Sets current coupling prescale

Sacher Lasertechnik

Group

Direction Sets current coupling direction
Menu Jump to main menu
System Jump to system menu

User Manual Laser Diode Controller PilotPC 31

Sacher Lasertechnik

Group

Current Coupling Setup

Theory of operation.

Most tunable external cavity diode lasers are fine-tuned electrically with
a piezo actuator. Providing a coupling between the piezo voltage and
the injection current results in a large enhancement of the modehop-free
tuning range of external cavity diode lasers.
The laser driver of Sacher Lasertechnik provides an adjustable coupling
between the piezo voltage and the injection current of the diode laser.
Therefore, the modehop-free tuning range of our Laser systems may be
enhanced by a factor of up to 5. For example, if theoretical modehop­free tuning range is limited to 10GHz, then the modehop-free tuning
range may be increased up to 50GHz with Current Coupling.

Current coupling Block diagram

Piezo Input

Gain

Prescaler Direction

control

Laserdiode Current
Setpoint

In case of I-Mode the laser current will turn up as follows

When direction is POS

Laser current = Laser Current Set + Piezo Voltage x Gain

When direction is NEG

Laser current = Laser Current Set - Piezo Voltage x Gain

Direction Enable Amplification

Amplification

+

Laser diode
current source

User Manual Laser Diode Controller PilotPC 32

Sacher Lasertechnik

DIAGNOSE STA 51

System Settings

Group

Diagnostic Menu

The diagnostic menu gives the user additional text information when an
error occurs. The menu will be permanent updated.

1 Laserhead Loop Open
10 TEC Loop Open
40 Temperature Out Of Range

System Settings Menu

In this menu you could configure

- the remote interfaces

- Save /Recall User Settings

- adjust LCD Contrast

- disable/enable Beeper

Interface : RS232
Baudrate : 57600,8,1N
GPIB Address : 1
Recall Setting : 1
Save Setting : 1
LCD Contrast : 50
Beeper : enable
System Setup ?
Diagnose ?

Menu Description

Interface Sets serial Interface to RS232 or USB
Baudrate Sets baudrate for serial interface
GPIB Address Sets GPIB address
Recall Setting Recalls custom setting
Save Setting Saves all settings to one of 2 custom

settings
LCD Contrast Sets LCD contrast
Beeper Enables/Disables beeper
System Setup Jump to system menu
Diagnose Jump to diagnose menu

User Manual Laser Diode Controller PilotPC 33

Sacher Lasertechnik

Group

Beeper

The bepper acts as acoustical warning when the laser is turned on and as
error indicator.
Error beeper messages could be deactivated in the SYSTEM
SETTINGS or over remote interface.

The following table explains the different cases.

Action Beeper sound Could

not be
deactivated

Laser delay count 50ms every

second
Laser on 50ms 3 times X
Laser Current Limit reached 200ms 3 times
Temperature not reached 5ms 150 times
Temp-Watch window true 10ms 2 times
Driver Overtemperature 500ms 3 times X
General fault 5ms 20 times

X

User Manual Laser Diode Controller PilotPC 34

Sacher Lasertechnik

Group

Remote Interfaces

The driver is equipped with RS232 , USB and GPIB Interface.
RS232 and USB lead internally to one connection, so it is not possible
to use them simultaneously.

RS232 Port

USB Port

GPIB Port

RS232 Gateway Mode

The RS232 interface could also be used as a connection between the
driver and other smart actuators. The port acts than as communication
gateway. The actuators could only reached by the GPIB interface.

PC

GPIB Mode

When the user sends GPIB commands the driver will automatically
switch in REMOTE condition. In this state the keyboard is disabled,
except the Laser ON/OFF button.
With the menu button the driver gets back in LOCAL mode.

PilotPC

µController

Smart

Actuator

User Manual Laser Diode Controller PilotPC 35

Sacher Lasertechnik

Group

System Info Menu

System Info displays information about operation hours and firmware.

Menu Description

Serial No. Displays the serial number
Version Displays the version

Working-Hours Displays the working hours of the

Working-Hours LD Displays the operating hours of the

Userkey
Bootmode Is used if the firmware of the driver

System Info

SW V6.20/HW V7.0/PL V7.1
Serial No. 0504021
Working-Hours : 62:34:56 h
Working-Hours LD : 31:23:45 h
Userkey : 123456
Bootmode : 00 see Manual !

(Important in case of troubleshooting,
support question)

driver

laser current source (turn on time)

must be updated. This could be done
with our Sacher Lasertechnik support
team

User Manual Laser Diode Controller PilotPC 36

Sacher Lasertechnik

Group

Driver Secure / Unsecure

The driver could be set in a secure mode.
In secure mode important laser parameters are blocked.

This feature is installed to protect the lasersystem against user operating
errors.

When the driveris is in secure mode the following splash screen came
up when th driver is switched on.

SW V4.00 opt.65C HW V4.00 LC
Serial No. 0504001 Secure

Thefollowing parameters could not be adjusted in “secure mode”

Piezo Option PL V7.0
GPIB Addr=1 TEC low curr. (P)

The driver could be unsecured with a userkey which will be provided
By our support team on demand.

The valid userkey could be send via remote interface to to the driver or
could by adjusted in the “System Info” menu with the jog.

Pilot PC 500

System Info

SW V6.20/HW V7.0/PL V7.1
Serial No. 0504021
Working-Hours : 62:34:56 h
Working-Hours LD : 31:23:45 h
Userkey : 123456
Bootmode : 00 see Manual !

When the driver is secured all parameters in “SETUP” level are
disabled against user adjustment,
See also chapter ”Menu”.

User Manual Laser Diode Controller PilotPC 37

Sacher Lasertechnik

Group

Specifications

Laser Diode Controller PilotPC 500

Current Source

Drive Current Output

Output Current Range: 0-500mA
Setpoint Resolution: 0.1mA
Setpoint Accuracy: ±0.1% of FS
Noise: <5µA RMS
Temperature Coefficient: <50ppm/°C
Short-Term Stability (1 hr.): <20ppm
Long-Term Stability (24 hr.): <50ppm

Preregulator Voltage

Adjustable : 0-7V

Drive Current Limit Settings

Range: 1-500mA
Resolution: 0.1mA

Photodiode Feedback

Type: Differential 100R Input
Photodiode Current Range : 0-5000µA Range 1
0-500µA Range 2
0-500µA Range 2 *1

*1This is a factory option and must be activated inside the driver.

External Analog Modulation

Input Voltage Range: -10V..+10V
Transfer Function: 60mA/V
Bandwidth(3dB): 6kHz

User Manual Laser Diode Controller PilotPC 38

Sacher Lasertechnik

Group

Current Coupling Modulation

Low Volt Input analog Range -20..+20V
High Volt Input analog Range -120..+120V
Low Volt Mode Transf: 28,2..310 mA/V
High Volt Mode Transf: 4,7..51,7 mA/V
(High Voltage Mode = Prescal ON)
Bandwidth(3dB): 6kHz

Laser Current Monitor *2

Output Voltage Range: 0-10V
Transfer Function: 1V/300mA

*2This is Output is not available in the piezo option

Temperature Control

TEC Output

Output Type: Bipolar Constant Current Source
Compliance Voltage: 8V
Maximum Output Current: -2A to 2A
Current Limit Setpoint Accuracy:0.01A
Maximum Power: 16W

Sensor

Temperature Sensor: NTC or IC Temp Sensor AD590
Temp. Control Range : -5 to 30°C (AD590 and NTC)
Temp. Meas. Range AD590: -5 to 30°C
Temp. Meas. Range NTC: -5 to 50°C

Setpoint Resolution NTC: 0.001°C
Setpoint Resolution AD590: 0.001°C
Long Time Stability: 0.05°C
Thermistor Sensing Current: 50µA
Sensor Bias: 5V

Common Data

Dimensions

W x H x D: 270 x 110 x 320 mm

PowerLine

Line Voltage 110V / 115V / 230V
Line Frequency 50-60Hz

NOTES
All values relate to a one-hour warm-up period.
Operating Temperature: 0°C to 40°C
Storage Temperature: –25°C to 70°C
Humidity: 20–85 %, non condensing

User Manual Laser Diode Controller PilotPC 39

Sacher Lasertechnik

Group

Laser Diode Controller PilotPC 3000

Current Source

Drive Current Output

Output Current Range: 0-3000mA
Setpoint Resolution: 1mA
Setpoint Accuracy: ±0.1% of FS
Noise: <20µA RMS
Temperature Coefficient: <50ppm/°C
Short-Term Stability (1 hr.): <20ppm
Long-Term Stability (24 hr.): <50ppm

Preregulator Voltage

Adjustable : 0..7V

Drive Current Limit Settings

Range: 1-3000mA
Resolution: 1mA

Photodiode Feedback

Type: Differential 100R Input
Photodiode Current Range : 0-5000µA Range1
0-500µA Range 2 *1

External Analog Modulation

Input Voltage Range: -10V..+10V
Transfer Function: 300mA/V
Bandwidth(3dB): 6kHz

Current Coupling Modulation

Low Volt Input analog Range -20..+20V
High Volt Input analog Range -120..+120V
Low Volt Mode Transf: 141..1552 mA/V
High Volt Mode Transf: 23..258 mA/V
(High Voltage Mode = Prescal ON)
Bandwidth(3dB): 6kHz

Laser Current Monitor *2

Output Voltage Range: 0-10V
Transfer Function: 1V/300mA

*2This is Output is not available in the piezo option

User Manual Laser Diode Controller PilotPC 40

Sacher Lasertechnik

Group

Temperature Control

TEC Output

Output Type: Bipolar Constant Current Source
Compliance Voltage: 8V
Maximum Output Current: -4A to 4A
Current Limit Setpoint Accuracy:0.01A
Maximum Power: 32W

Sensor

Temperature Sensor: NTC or IC Temp Sensor AD590
Temp. Control Range : -5 to 30°C (AD590 and NTC)
Temp. Meas. Range AD590: -5 to 30°C
Temp. Meas. Range NTC: -5 to 50°C

Setpoint Resolution NTC: 0.001°C
Setpoint Resolution AD590: 0.001°C
Long Time Stability: 0.05°C
Thermistor Sensing Current: 50µA
Sensor Bias: 5V

Common Data

Dimensions

W x H x D: 270 x 110 x 320 mm

PowerLine

Line Voltage 110V / 115V / 230V
Line Frequency 50-60Hz
Power Supply <150VA

Operating Conditions

Operating Temperature: 0°C to 40°C
Storage Temperature: –25°C to 70°C
Humidity: 20–85 %, non condensing

Standing horizontal without fan obstruction

User Manual Laser Diode Controller PilotPC 41

Sacher Lasertechnik

Group

Laser Diode Controller PilotPC 4000

Current Source

Drive Current Output

Output Current Range: 0-4000mA
Setpoint Resolution: 1mA
Setpoint Accuracy: ±0.1% of FS
Noise: <50µA RMS
Temperature Coefficient: <50ppm/°C
Short-Term Stability (1 hr.): <20ppm
Long-Term Stability (24 hr.): <50ppm

Preregulator Voltage

Adjustable : 0..7V

Drive Current Limit Settings

Range: 1-4000mA
Resolution: 1mA

Photodiode Feedback

Type: Differential 100R Input
Photodiode Current Range : 0-5000µA Range1
0-500µA Range 2 *1

External Analog Modulation

Input Voltage Range: -10V..+10V
Transfer Function: 400mA/V
Bandwidth(3dB): 6kHz

Current Coupling Modulation

Low Volt Input analog Range -20..+20V
High Volt Input analog Range -120..+120V
Low Volt Mode Transf: 189..2083 mA/V
High Volt Mode Transf: 32..347 mA/V
(High Voltage Mode = Prescal ON)
Bandwidth(3dB): 6kHz

Laser Current Monitor *2

Output Voltage Range: 0-10V
Transfer Function: 1V/400mA

*2This is Output is not available in the piezo option

User Manual Laser Diode Controller PilotPC 42

Sacher Lasertechnik

Group

Temperature Control

TEC Output

Output Type: Bipolar Constant Current Source
Compliance Voltage: 8V
Maximum Output Current: -4A to 4A
Current Limit Setpoint Accuracy:0.01A
Maximum Power: 32W

Sensor

Temperature Sensor: NTC or IC Temp Sensor AD590
Temp. Control Range : -5 to 30°C (AD590 and NTC)
Temp. Meas. Range AD590: -5 to 30°C
Temp. Meas. Range NTC: -5 to 50°C

Setpoint Resolution NTC: 0.001°C
Setpoint Resolution AD590: 0.001°C
Long Time Stability: 0.05°C
Thermistor Sensing Current: 50µA
Sensor Bias: 5V

Common Data

Dimensions

W x H x D: 270 x 110 x 320 mm

PowerLine

Line Voltage 110V / 115V / 230V
Line Frequency 50-60Hz
Power Supply <160VA

Operating Conditions

Operating Temperature: 0°C to 40°C
Storage Temperature: –25°C to 70°C
Humidity: 20–85 %, non condensing

Standing horizontal without fan obstruction

User Manual Laser Diode Controller PilotPC 43

Sacher Lasertechnik

Group

Piezo Driver Option

The piezo driver is realized as a piggy back board which could be
installed inside the PilotPC driver.

Piezo Amplifier Output Drive

Output Voltage Range: ±13.5V
Output Voltage Accuracy: <10mV
Offset Setpoint Resolution: 1mV
Max. Output Current: 500mA
Noise (0,01Hz ... 10kHz): <1mV
3dB Bandwidth Output Amplifier : 14kHz

Temperature Coefficient: Short-Term Stability (1

DDS Function Generator

Frequency Range: 0,1Hz…100kHz
Freq. Accuracy : < 1%
Frequency Waveforms: Sine, Triangle

External Modulation Input (MOD PZ) *1

Amplification: 2V/V (Piezo Version <8)
Amplification: 1V/V (Piezo Version 8)
Amplification Resolution: fixed

Function Generator Output (FG OUT)

Output Voltage Range: ±13.0V
Output Impedance: 47R

Synchronous Clock Output (SYNC)

Waveform: Rectangle
Output Low/High Voltage: 0V/5V

peak to peak

User Manual Laser Diode Controller PilotPC 44

Sacher Lasertechnik

Group

Appendix

Connector Schematics

Laser Connectors

Laser Supply Cable to Laser Head (LD OUTPUT)

Standard Sub-D9 FEMALE 1:1 connection rated for 5A.
This connection is required.

Pin Nr. Signal Name Description

1 Interlock
2 PD- Photodiode Signal Minus
3 LD GND Laser Diode Ground
4 PD+ Photodiode Signal Plus
5 Interlock
6 REL+ Safety Relay Plus
7 LD-
8 LD+ Laser Diode Plus
9 GND

User Manual Laser Diode Controller PilotPC 45

Sacher Lasertechnik

Group

TEC Supply Cable to Laser Head (TEC OUTPUT)

Standard Sub-D9 MALE 1:1 connection rated for 5A. This connection
is usually required, but optional if temperature control is not needed.

Pin Nr. Signal Name Description

1 MGND
2 AD590+ Temperature Sensor
3 AD590- Temperature Sensor
4
5
6 NTC Temperature Sensor
7 TEC-GND
8 TEC-OUT Peltier Output
9 NTC Temperature Sensor

User Manual Laser Diode Controller PilotPC 46

Sacher Lasertechnik

Group

IEEE488 (GPIB) Connector

GPIB Remote Interface Connector

Standard Centronics 24pol FEMALE connection
This connection is only used for Remote Control

Pin Nr. Signal Name Description

1 DIO1 Data input /output
2 DIO2 Data input /output
3 DIO3 Data input /output
4 DIO4 Data input /output
5 EOI End or identify
6 DAV Data valid
7 NRFD Not ready for data
8 NDAC Not data accepted
9 IFC Interface clear
10 SRQ Service reqest
11 ATN Attention
12 SHIELD
13 DIO5 Data input /output
14 DIO6 Data input /output
15 DIO7 Data input /output
16 DIO8 Data input /output
17 REN
18 Shield
19 Shield
20 Shield
21 Shield
22 Shield
23 Shield
24 GND

USB Connector

USB Remote Interface Connector

Standard USB Type B connection
This connection is only used for Remote Control

Pin Nr. Signal Name Description

1 n.c.
2 USBDM Data Plus
3 USBDP Data Minus
4 GND Ground

User Manual Laser Diode Controller PilotPC 47

Sacher Lasertechnik

Group

RS232 Connector

RS232 Remote Interface Connector

Standard Sub-D9 FEMALE connector.
This connection is only used for Remote Control.
Use a 1to1 cable for connection with a standard personal computer.

Pin Nr. Signal Name Description

1
2 TxD Output
3 RxD Input
4
5 GND
6
7
8
9

User Manual Laser Diode Controller PilotPC 48

Sacher Lasertechnik

Group

Modulation Connector

I/P MOD

The input is used for modulating the laser current or the laser power.
MOD IN is a differential input.

Pin Nr. Signal Name Description

Signal + MOD P Modulation Plus
Signal - MOD M Modulation Minus

Monitor Connector

I/P Monitor

The output is used for monitoring the laser current or the laser power.
Monitor is a differential output.

Pin Nr. Signal Name Description

Signal + I/P MON P Monitor Plus
Signal - I/P MON M Monitor Minus

Function Generator Output

FG OUT

The output is used for modulating an external device
with the internal function generator.

Pin Nr. Signal Name Description

Signal + FG OUT P Functiongenerator Plus
Signal - FG OUT M Functiongenerator Minus

Piezo Modulation Input

PZ MOD

The input is used for external modulation the piezo voltage.

Pin Nr. Signal Name Description

Signal + PZ MOD P Modulation Plus
Signal - PZ MON M Modulation Minus

User Manual Laser Diode Controller PilotPC 49

Sacher Lasertechnik

Group

PZ / Function Generator Sync Output

PZ Sync

The output is used for triggering external devices.

Pin Nr. Signal Name Description

Signal + PZ SYNC P Modulation Plus
Signal - PZ SYNC M Minus

Piezo Connectors

Piezo Connectors

Both Piezo connectors are internally connected.
They are used to adjust the laser current /power when
current coupling is activated.

Pin Nr. Signal Name Description

Signal + Piezo + Piezo Signal Plus
Signal - Piezo - Piezo Signal Minus

The counterpart connector is
LEMO FFA.00.250.CPAC29

User Manual Laser Diode Controller PilotPC 50

Sacher Lasertechnik

1

Group

Interlock Connector

Interlock Safety Connector

This connection is used for an external safety switch.
It gives an opportunity to connect an external indicator lamp witch is
switched on by the laser controller when the power stage is active.
The switch is ground free (not connected with the internal electronic).

Pin Nr. Signal Name Description

1 I-Signal Interlock Signal
2 I-GND Interlock Signal

4

3 I-Contact Switch
4 I-Contact Switch

LINE Connector

Line connector

Standard line connector with voltage selector and fuse case.

User Manual Laser Diode Controller PilotPC 51

Sacher Lasertechnik

Group

Error Codes

The onboard diagnostic module returns the system
status and error flags. The error number is generated
by the sum of each individual error number.
The bits are octal coded ( refer to Table 4).

The following table explains the error origin.

Bit # weight Status / Error

0 1 I-Limit reached

Laser

TEC

1 2 Laser Open Load / Compliance Voltage to low
2 4 Error Laser requires TEC enabled

3 10 Temp Watch Out Of Window
4 20 Temperature Out Of Range
5 40 Temperature Not Reached

Range

Loop

Device

6 100 Modulation Voltage Out Of Range
7 200 Photo Diode Out Of Range

8 400 Piezo Voltage Out Of Range

9 1000 Laser Head Loop Open
10 2000 Extern Interlock Loop Open
11 4000 Tec Loop Open

12 10000 Remote Control Command Error
13 20000 Temperature Coupling out of Range
14 40000 Device Over Temperature

User Manual Laser Diode Controller PilotPC 52

Sacher Lasertechnik

Group

Safety Symbols

On the rear side you find a ground connector

This connector is used as a measurement ground.

The connector is not used for supplying the protective earth.

User Manual Laser Diode Controller PilotPC 53

Sacher Lasertechnik

Fuse holder and

Voltage selector

Fuse holder and

Group

Fuse Replacement and Voltage Selection

On the rear side you find the fuse holder and voltage selector

Voltage selector

Fuse Replacment

Follow these steps

1. Remove the power cord

2. Remove the fuse holder and replace the fuses
(use 2A T on both fuses)

3. Replace the fuse holder assembly in the rear panel

Voltage Selection

User Manual Laser Diode Controller PilotPC 54

Follow these steps

1. Remove the power cord

2. Remove the fuse holder

3. Rotate the line voltage selector until the correct voltage

appears in the window

4. Replace the fuse holder assembly in the rear panel

Sacher Lasertechnik

Group

Declaration of Conformity

DECLARATION OF CONFORMITY

Sacher Lasertechnik

We:

Rudolf-Breitscheid-Str. 1-5
D-35037 Marburg

declare on our own responsibility, that the product:

Kind of equipment: Laserdiodecontroller

Type-designation: PilotPC

Product Options: All Options

is in compliance with following standard(s) or normative documents:

EMC:

DIN EN 55022 (09-2003)
DIN EN 61000-3-2 (12-2001)
DIN EN 61000-3-3 (05-2002)
DIN EN 61000-4-2 (05-2004)
DIN EN 61000-4-4 (07-2002)
DIN EN 61000-4-5. (12-2001)
DIN EN 61000-4-6 (12-2001)
DIN EN 61000-4-8 (05-2004)
DIN EN 61000-4-11 (12-2001)

Safety:

DIN EN 61010-2 (08-2002)

Supplementary Information:
The product herewith complies with the requirements of the Low Voltage
Directive 73/23 EEC and the EMC Directive 89/336 /EEC and carries the “CE”
mark accordingly.

Marburg,Germany 22.7.2005 Gerd Breidenstein

Quality Assurance Manager

Accredited testlaboratory: TÜV Technische Überwachung Hessen GmbH
Knorrstraße 36, D-34121 Kassel, Germany

User Manual Laser Diode Controller PilotPC 55

Sacher Lasertechnik

Group

Technical Support

Information and advice about the performance or operation of your
laser is available from our application engineers. For quickest response
ask for “Technical Support” and have your model and serial number
available. Support is available by:

Sacher – Lasertechnik
Rudolf-Breitscheid-Str. 1-5
35037 Marburg, Germany
Tel: [phone] – 290, Fax: [phone] - 299
[e-mail]
or
5765 Equador Way
Buena Park, CA 90620
USA
Tel.: [phone], Fax: [phone]

Group

User Manual Laser Diode Controller PilotPC 56

www.sacher.us

www.sacher.de

Sacher Lasertechnik is leading manufacturer of tunable external cavity diode

range

lasers, ECDLs in Littrow and in

as well as driver electronics for diode lasers and

University

coatings for

knowledge, we

sources for

Support of the

Please contact us with your measurement requirements. We would be proud to

http://www.sacher-laser.com

Company Profile

lasers (ECDLs) with more than 10 years of experience. The product
includes anti-reflection coated diode
Littman/Metcalf configuration
sophisticated measuring electronics.

Sacher Lasertechnik was founded as a spin-off company of Marburg
in 1992. We started up with the manufacturing of anti-reflection
diode lasers according to patent 6,297,066. Based an this key
developed stable, narrow linewidth, wavelength tunable laser
spectroscopy, patent 5,867,512. We gratefully acknowledge the
German ministry of research within contracts 1 3N6693 and13N7156.

Our product range currently covers

• Diode Lasers, Fabry Perot, DFB, Antireflection coated

• Tunable diode lasers in Littrow configuration

• Tunable diode lasers in Littman / Metcalf configuration

• High power (P>300mW) Raman lasers in Littrow configuration

• Low noise diode laser Controllers

• Measurement electronics

Support you with our competence.

Sacher Lasertechnik LLC
5765 Equador Way
Buena Park, CA 90620
USA

Sacher Lasertechnik GmbH
Rudolf-Breitscheid-Str. 1-5
35037 Marburg
Germany