Sony SLD1135VS Datasheet

– 1 –

SLD1135VS

E98273A86-PS

650nm Index-Guided Red Laser Diode

Description

The SLD1135VS is a index-guided red laser diode
for Laser pointer. The wavelength is 20nm shorter
than SLD1122VS.

Features

• Small astigmatism (7µm typ.)

• Small package (φ5.6mm)

• Single longitudinal mode

• Low operating voltage (2.5V Max)

• Max operating temperature = 40°C (Case temperature)

Applications

Laser pointer

Structure

• AlGaInP MQW laser diode

• PIN photodiode to monitor laser beam output

Recommend Optical Power Output

5mW

Absolute Maximum Ratings (Tc = 25°C)

• Optical power output Po 5 mW

• Reverse voltage VR LD 2 V

PD 15 V

• Operating temperature Topr –10 to +40 °C

• Storage temperature Tstg –40 to +85 °C

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.

M-294

Pin Configuration

3

LD

1

2

PD

COMMON

21

3

Bottom View

1. LD cathode

2. PD anode

3. COMMON

Connection Diagram

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SLD1135VS

Electrical and Optical Characteristics (Tc = 25°C) Tc: Case temperature

Item
Threshold current
Operating current
Operating voltage
Wavelength

Radiation
angle

Positional
accuracy

Differential efficiency
Astigmatism
Monitor current

Ith
Iop
Vop

λp
θ⊥
θ//

∆X, ∆Y, ∆Z
∆φ//
∆φ⊥

ηD
As
Imon

Po = 5mW
Po = 5mW
Po = 5mW

Po = 5mW

Po = 5mW

Po = 5mW
Po = 5mW
Po = 5mW, VR = 5V

22

5

0.3

0.05

30
35

2.2

650

30

7

0.6
7

0.1

40
45

2.5

660

40
12

±150

±3
±3

0.9
15

0.25

mA
mA

V

nm
degree
degree

µm
degree
degree

mW/mA

µm

mA

Symbol Conditions Min. Typ. Max. Unit

Perpendicular
Parallel
Position

Angle

Handling Precautions

(1) Eye protection against laser beams
The optical output of laser diodes ranges from
several mW to 4W. 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.

Safety goggles for
protection from laser beam

IR fluorescent plate

Optical
material

Lens

Laser diode

Optical board

Optical power output control device
Temperature control device

(2) Prevention of surge current and electrostatic discharge
Laser diode is most sensitive to electrostatic discharge among semiconductors. When a large current is
passed through the laser diode even for an extremely short time (in the order of nanosecond), the strong light
emitted from the laser diode promotes deterioration and then laser diodes are destroyed. Therefore, note that
the surge current should not flow the laser diode driving circuit from switches and others. Also, if the laser
diode is handled carelessly, it may be destructed instantly because electrostatic discharge is easily applied by
a human body. Be great careful about excess current and electrostatic discharge.