Sony SLD301XT Datasheet

100mW High Power Laser Diode

Description

The SLD301XT allows independent thermal and electric design.
This laser diode has a built-in TE (Thermo Electric) cooler.

Features

• High power

Recommended optical power output Po = 90mW

• Low operating current

• Flat Package with built-in photodiode, TE cooler and thermistor

Applications

• Solid state laser excitation

• Medical use

Structure

AlGaAs double-hetero-type laser diode

Operating Lifetime

MTTF 10,000H (effective value) at Po = 90mW, Tth = 25°C

Absolute Maximum Ratings (Tth = 25°C)

• Optical power output Po 100 mW

• Reverse voltage VR LD 2 V

PD 15 V

• Operating temperature (Tth) Topr –10 to +50 °C

• Storage temperature Tstg –40 to +85 °C

– 1 –

E88059C02-PS

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

SLD301XT

No.

1
2
3
4
5
6
7
8

Function
TE cooler (negative)
Thermistor lead 1
Thermistor lead 2
Laser diode (anode)
Laser diode (cathode)
Photodiode (cathode)
Photodiode (anode)
TE cooler (positive)

Equivalent Circuit

Pin Configuration (Top View)

Warranty

This warranty period shall be 90 days after receipt of the product or
1,000 hours operation time whichever is shorter.
Sony Quality Assurance Department shall analyze any product that
fails during said warranty period, and if the analysis results show
that the product failed due to material or manufacturing defects on
the part of Sony, the product shall be replaced free of charge.
Laser diodes naturally have differing lifetimes which follow a Weibull
distribution.
Special warranties are also available.

TE Cooler

H LD

T

12

34 56 78

PN

PD

18

– 2 –

SLD301XT

Electrical and Optical Characteristics (Tth: Thermistor temperature, Tth = 25°C)

Handling Precautions

Eye protection against laser beams
The optical output of laser diodes ranges from
several mW to 1W. However the optical power
density of the laser beam at the diode chip
reaches 1mW/cm2. Unlike gas lasers, since
laser diode beams are divergent, uncollimated
laser diode beams are fairly safe at a laser
diode. For observing laser beams, ALWAYS use
safety goggles that block infrared rays. Usage of
IR scopes, IR cameras and fluorescent plates is
also recommended for monitoring laser beams
safely.

Item

Symbol

Conditions

Min.

Typ. Max. Unit
Ith
Iop
Vop

λp
Imon

θ⊥
θ//

∆X, ∆Y
∆φ⊥

ηD

Rth

Threshold current
Operating current
Operating voltage
Wavelength

∗

Monitor current

Radiation angle

Positional accuracy

Differential efficiency
Thermistor resistance

PO = 90mW
PO = 90mW
PO = 90mW
PO = 90mW

VR = 10V

PO = 90mW

PO = 90mW

PO = 90mW
Tth = 25°C

770

0.65

150
250

1.9

0.15
28

12

0.9
10

200
400

3.0

840

40
17

±100

±3

mA
mA

V

nm
mA

degree
degree

µm

degree

mW/mA

kΩ

Perpendicular
Parallel
Position
Angle

∗

Wavelength Selection Classification

Type
SLD301XT-1
SLD301XT-2
SLD301XT-3

Wavelength (nm)

785 ± 15
810 ± 10
830 ± 10

Type

SLD301XT-21
SLD301XT-24
SLD301XT-25

Wavelength (nm)

798 ± 3
807 ± 3
810 ± 3

APC

ATC

Safety goggles for
protection from
laser beam

IR fluorescent plate

Optical
material

Optical power output control device
temperature control device

Lens

Laser diode

Optical boad

– 3 –

SLD301XT

Example of Representative Characteristics

Optical power output vs.
Forward current characteristics

IF – Forward current [mA]

0 250 500

0

100

200

Po – Optical power output [mW]

Tth = –10°C

Tth = 0°C

Tth = 25°C

Tth = 50°C

Optical power output vs. Monitor current characteristics

Imon – Monitor current [mA]

0 0.05 0.1

0

50

100

Po – Optical power output [mW]

Tth = –10°C

Tth = 0°C

Tth = 25°C

Tth = 50°C

Threshold current vs. Temperature characteristics

Tth – Thermistor temperature [°C]

–10 0 10 20 30 40 50

100

500

1000

Ith – Threshold current [mA]

Power dependence of far field pattern

(parallel to junction)

Angle [degree]

–30 –20 –10 0 10 20 30

Radiation intensity (optional scale)

Tth = 25°C

PO = 90mW

PO = 60mW

PO = 30mW

Power depecdence of near field pattern

50µm

Radiation intensity (optional scale)

Tth = 25°C

PO = 90mW
PO = 75mW
PO = 50mW

PO = 25mW

Oscillation wavelength vs. Temperature characteristics

Tth – Thermistor temperature [°C]

–10 0 10 20 30 40 50

780

790

830

820

810

800

λp – Oscillation wavelength [nm]

PO = 90mW