SLD1231VL Datasheet, PDF (2/5 Pages) Sony Corporation – High Power Red Laser Diode

SLD1231VL
Electrical and Optical Characteristics (Tc = 25°C)
Item
Threshold current
Symbol
Ith
Conditions
Operating current
Iop
Po = 30mW
Operating voltage
Vop
Po = 30mW
Wavelength
Radiation
angle
Positional
accuracy
Perpendicular
Parallel
Position
Angle
Differential efficiency
λp
θ⊥
θ//
∆X, ∆Y, ∆Z
∆φ⊥
∆φ//
SE
Po = 30mW
Po = 30mW
Po = 30mW
Po = 30mW
Po = 30mW
Po = 30mW
Astigmatism
As
Po = 30mW
Min.
670
19
6
0.15
Tc: Case temperature
Typ. Max.
Unit
55
70
mA
95
120
mA
2.4
3.0
V
685 699
nm
23
27 degree
9
12 degree
±80
µm
±3 degree
±3 degree
0.60 1.0 mW/mA
5
10
µm
Handling Precautions
(1) 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.
Safety goggles for
protection from laser beam
Laser diode
Lens
Optical
material
IR fluorescent plate
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.
–2–