Vescent Photonics
D2 Series Product Manual
1.2.
Specifications
Min.
Typical
Max.
Units
Wavelength
780.24
nm
Output power
30
40
50
mW
Beam diameter
0.8
1.1
1.7
mm
(1/e
2
dia.)
Polarization
Horizontal
Optical isolation
35
dB
Operating current
150
180
mA
Threshold Current
40
50
70
mA
Temperature range
Stage 1, housing
Stage 2, laser
15
0
20
15
40
50
(1)
°C
Temperature stability
See Laser Controller,
Model No. D2-105
Safety Class
3B
Beam height
0.95
inches
Total package Size
(L x W x H)
3.75 x 4 x 2
inches
1.3.
Inputs, Outputs, and Controls
Vertical and horizontal pointing
The vertical and horizontal alignment of the laser system is factory set and should not need
adjustment. However, if your specific application requires it or the system is misaligned, the
DBR subassembly has adjustments to steer the beam for alignment to the spectroscopy module or
other modules. The beam pointing is adjusted by loosening the three lock screws ½ turn past the
crack point and adjusting the x and y positioning setscrews on the top and left side (facing out
along the laser beam) of the module (see Figure 3). For more detailed instructions, see section
1.4.
1
Operation above 40° C can reduce the lifetime of the laser diode
7
