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Cascades™ Vertical Stacked Arrays
Combining nLIGHT’s high-power Cascades™ diode laser bars with an industry leading vertical pitch, the Cascades™ vertical stacked array product series offers unparalleled brightness for leading-edge applications.
Available wavelengths range from 808 nm to beyond 2000 nm, and up to 20 bars can be arranged in a single package. Fast-axis collimation is an available option, and combined with nLIGHT’s low-smile bars, produces beams with low-divergence for demanding applications. nLIGHT’s Cascades™ vertical stacked arrays are available with an optional water manifold for ease of use.
 Download datasheet |
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VSA-ww-xxxx-yyyy1 |
| Optical |
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| Center wavelength |
nm |
790 - 825 |
910 - 980 |
1400 - 1600 |
| Center wavelength tolerance |
nm |
± 3 |
± 3 |
± 5 |
| Number of bars |
# |
1 - 20 |
1 - 20 |
1 - 20 |
| CW output power / bar |
W |
60 |
60 |
25 |
| Bar length |
cm |
1 |
1 |
1 |
| Number of emitters / bar |
# |
49 |
49 |
19 |
| Emitter size |
µm |
100 |
100 |
100 |
| Emitter spacing |
µm |
200 |
200 |
500 |
| Spectral width (FWHM) |
nm |
< 3 |
< 4 |
< 10 |
| Slope efficiency |
W / A |
> 1.1 |
> 0.9 |
> 0.4 |
| Polarization |
TM or TE |
TM |
TE |
TE |
| Fast-axis divergence |
Degrees |
36° |
38° |
27° |
| Fast-axis divergence (Lensed) |
Degrees |
0.25° |
0.25° |
0.25° |
| Slow-axis divergence |
Degrees |
10° |
10° |
10° |
| Wavelength temperature coefficient2 |
nm / °C |
0.28 |
0.3 |
0.4 |
| Electrical |
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| Power conversion efficiency |
% |
55 |
50 |
30 |
| Threshold current (ITH) |
A |
14 |
8 |
10 |
| Operating current (IOP) |
A |
60 |
70 |
70 |
| Operating voltage / bar (VOP) |
V |
1.8 |
1.6 |
1.2 |
| Series resistance / bar (RS) |
Ω |
0.005 |
0.005 |
0.005 |
| Mechanical |
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| Storage temperature range3 |
°C |
10 to 40 |
10 to 40 |
10 to 40 |
| Thermal |
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| Thermal resistance4 |
°C / W |
0.35 |
0.35 |
0.35 |
| Operating temperature |
°C |
20 to 35 |
20 to 35 |
20 to 35 |
| Fluid flow rate |
ml/min/plate |
200 - 250 |
200 - 250 |
200 - 250 |
| Max inlet pressure |
psi |
55 |
55 |
55 |
| Deionized water resistivity |
MΩ-cm |
0.25 - 0.5 |
0.25 - 0.5 |
0.25 - 0.5 |
| Filter |
µm |
< 20 |
< 20 |
< 20 |
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VSA-ww-xxxx-yyyy1 |
| Optical |
|
|
|
| Center wavelength |
nm |
790 - 825 |
910 - 980 |
| Center wavelength tolerance |
nm |
± 3 |
± 3 |
| Number of bars |
# |
1 - 20 |
1 - 20 |
| CW output power / bar |
W |
100 |
80 |
| Bar length |
cm |
1 |
1 |
| Number of emitters / bar |
# |
64 |
49 |
| Emitter size |
µm |
120 |
100 |
| Emitter spacing |
µm |
150 |
200 |
| Spectral width (FWHM) |
nm |
< 3 |
< 4 |
| Slope efficiency |
W / A |
> 1.05 |
> 0.9 |
| Polarization |
TM or TE |
TM |
TE |
| Fast-axis divergence |
Degrees |
36° |
38° |
| Fast-axis divergence (Lensed) |
Degrees |
0.25° |
0.25° |
| Slow-axis divergence |
Degrees |
10° |
10° |
| Wavelength temperature coefficient2 |
nm / °C |
0.28 |
0.3 |
| Electrical |
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| Power conversion efficiency |
% |
48 |
52 |
| Threshold current (ITH) |
A |
26 |
12 |
| Operating current (IOP) |
A |
110 |
95 |
| Operating voltage / bar (VOP) |
V |
1.85 |
1.6 |
| Series resistance / bar (RS) |
Ω |
0.005 |
0.005 |
| Mechanical |
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| Storage temperature range3 |
°C |
10 to 40 |
10 to 40 |
| Thermal |
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| Thermal resistance4 |
°C / W |
0.35 |
0.35 |
| Operating temperature |
°C |
20 to 35 |
20 to 35 |
| Fluid flow rate |
ml/min/plate |
200 - 250 |
200 - 250 |
| Max inlet pressure |
psi |
55 |
55 |
| Inlet to outlet pressure drop |
psi |
35 |
35 |
| Deionized water resistivity |
MΩ-cm |
0.25 - 0.5 |
0.25 - 0.5 |
| Filter |
µm |
< 20 |
< 20 |
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