Sony SLD324ZT Datasheet

High-Power Density 2W Laser Diode

Description

The SLD324ZT is a gain-guided, high-power density laser diode with a built-in TE cooler. A new flat, square
package with a low thermal resistance and an in-line pin configuration is employed. Fine tuning of the
wavelength is possible by controlling the laser chip temperature.

Features

• High power

Recommended optical power output: Po = 2.0W

• Low operating current: Iop = 2.5A (Po = 2.0W)

• Newly developed flat package with built-in photodiode, TE cooler and thermistor

Applications

• Solid state laser excitation

• Medical use

• Material processes

• Measurement

Structure

GaAlAs quantum well structure laser diode

Absolute Maximum Ratings (Tth = 25°C)

• Optical power output Po 2.2 W

• Reverse voltage VR LD 2 V

PD 15 V

• Operating temperature (Tth) Topr –10 to +30 °C

• Storage temperature Tstg –40 to +85 °C

• Operating current of TE cooler IT 4.0 A

Pin Configuration (Top View)

– 1 –

E93322B81-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.

SLD324ZT

No.

1
2
3
4
5
6

Function
TE Cooler (negative)
TE Cooler (negative)
Thermistor
Thermistor
LD (anode)
LD (anode)

No.

7
8

9
10
11
12

Function
LD (cathode)
LD (cathode)
PD (cathode)
PD (anode)
TE Cooler (positive)
TE Cooler (positive)

Equivalent Circuit

TH LD

TE Cooler

PD

5

61 2 11 127 8 9 103 4

112

– 2 –

SLD324ZT

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 3W. 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

∗

1

Monitor current

Radiation angle
(F. W. H. M.∗)

Positional accuracy

Differential efficiency
Thermistor resistance

PO = 2.0W
PO = 2.0W
PO = 2.0W
PO = 2.0W

VR = 10V

PO = 2.0W

PO = 2.0W

PO = 2.0W
Tth = 25°C

790

0.15
20

4

0.65

0.6

2.5

2.2

0.8
30

9

1.0
10

1.0

3.5

3.0

840

3.0
40

17

±100

±3

A
A
V

nm
mA

degree
degree

µm

degree

W/A

kΩ

Perpendicular
Parallel
Position
Angle

∗1

Wavelength Selection Classification

Type
SLD324ZT-1
SLD324ZT-2
SLD324ZT-3

Wavelength (nm)

795 ± 5
810 ± 10
830 ± 10

Type
SLD324ZT-21
SLD324ZT-24
SLD324ZT-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

∗

F. W. H. M. : Full Width at Half Maximum

– 3 –

SLD324ZT

Example of Representative Characteristics

Optical power output vs. Forward current characteristics

IF – Forward current [A]

0 0.5 1.51 2 2.5 3 3.5

0.5

0

1

1.5

2.5

2

3

Po – Optical power output [W]

Optical power output vs. Monitor current characteristics

Imon – Monitor current [mA]

0 10.5

0

1

2

0.5

1.5

2.5

Po – Optical power output [W]

Threshold current vs. Temperature characteristics

Tth – Thermistor temperature [°C]

–10 0 10 20 30

0.1

1

Ith – Threshold current [A]

Dependence of wavelength

Tth – Thermistor temperature [°C]

–10 0 10 20 30

780

830

820

810

800

790

λp – Wavelength [nm]

Power dependence of far field pattern

(Parallel to junction)

Angle [degree]

–90 –60 –30 0 30 60 90

Radiation intensity (optional scale)

Power dependence of far field pattern

(Perpendicular to junction)

Angle [degree]

–90 –60 –30 0 30 60 90

Radiation intensity (optional scale)

Tth = –10°C

Tth = 0°C

Tth = 25°C

Tth = 30°C

Tth = 15°C

Tth = –10°C

Tth = 0°C

Tth = 25°C

Tth = 30°C

Tth = 15°C

PO = 2.0W

Tth = 25°C

P

O = 1.5W

P

O = 1.0W

P

O = 0.5W

Tth = 25°C

PO = 2.0W

PO = 2.0W
PO = 1.5W
PO = 1.0W
PO = 0.5W