+86 21 51012729
info@bbotech.com
Si (Silicon) is used as a mirror substrate for lasers because of its thermal conductivity, light weight, and hardness. Its is also used for windows and lenses in the 1.2um m to 6.7um range. The refractive index is near 3.4 throughout the range. Silicon is also useful as a transmitter in the 20um to 300um m range.
Due to the strong absorption at 9um, Silicon is not suitable for use with CO2 lasers as a transmitting optic but is widely used for CO2 mirror. The density of Silicon is only half that of Germanium, Gallium Arsenide and Zinc Selenide.
Silicon Characteristics & Transmission Curve 
Silicon Windows Specifications:
|
Material |
Silicon |
|
Dimension Tolerance |
+0.0/-0.1mm |
|
Thickness Tolerance |
±0.1mm |
|
Surface Accuracy |
λ/4@632.8nm |
|
Surface Quality |
60-40 |
|
Parallelism |
<1' |
|
Clear Aperture |
>90% |
|
Bevel |
<0.2x45° |
|
Coating |
upon request |
Silicon Round Windows:
|
Part No. |
Dia(mm) |
T(mm) |
|
RWS00602 |
6.00 |
2.00 |
|
RWS01003 |
10.00 |
3.00 |
|
RWS01203 |
12.70 |
3.00 |
|
RWS01503 |
15.00 |
3.00 |
|
RWS02003 |
20.00 |
3.00 |
|
RWS02503 |
25.40 |
3.00 |
|
RWS03005 |
30.00 |
5.00 |
|
RWS03805 |
38.10 |
5.00 |
|
RWS05005 |
50.00 |
5.00 |
|
RWS07510 |
75.00 |
10.00 |
|
RWS10015 |
100.00 |
15.00 |
|
RWS15020 |
150.00 |
20.00 |
Silicon Square Windows:
|
Part No. |
H(mm) |
L(mm) |
T(mm) |
|
SWS01003 |
10.00 |
10.00 |
3.00 |
|
SWS01203 |
12.70 |
12.70 |
3.00 |
|
SWS01503 |
15.00 |
15.00 |
3.00 |
|
SWS02003 |
20.00 |
20.00 |
3.00 |
|
SWS02503 |
25.40 |
25.40 |
3.00 |
|
SWS03005 |
30.00 |
30.00 |
5.00 |
|
SWS03805 |
38.10 |
38.10 |
5.00 |
|
SWS05005 |
50.00 |
50.00 |
5.00 |
|
SWS07510 |
75.00 |
75.00 |
10.00 |
|
SWS10015 |
100.00 |
100.00 |
15.00 |
|
SWS15020 |
150.00 |
150.00 |
20.00 |
Silicon Lenses Specifications:
|
Material |
Silicon |
|
Design Wavelength |
4.0μm |
|
Focal Length Tolerance |
±1% |
|
Diameter Tolerance |
+0.0/-0.1mm |
|
Thickness Tolerance |
±0.2mm |
|
Surface Accuracy |
λ/2@632.8nm |
|
Surface Quality |
60-40 |
|
Centration |
<3' |
|
Clear Aperture |
>80% |
|
Bevel |
<0.2x45° |
|
Coating |
AR Coating @ 3-5μm |
Silicon Plano-convex Spherical Lenses:
|
Part No. |
Dia |
EFL |
R |
Tc |
Te |
BFL |
|
PCXS12015 |
12.70 |
15.00 |
36.38 |
2.60 |
2.00 |
14.24 |
|
PCXS12020 |
12.70 |
20.00 |
48.51 |
2.40 |
2.00 |
19.30 |
|
PCXS12040 |
12.70 |
40.00 |
97.01 |
2.20 |
2.00 |
39.36 |
|
PCXS25025 |
25.40 |
25.40 |
61.60 |
3.30 |
2.00 |
24.44 |
|
PCXS25050 |
25.40 |
50.00 |
121.27 |
4.00 |
3.30 |
48.83 |
|
PCXS25075 |
25.40 |
75.00 |
181.90 |
4.00 |
3.60 |
73.83 |
|
PCXS25100 |
25.40 |
100.00 |
242.53 |
4.00 |
3.70 |
98.83 |
|
PCXS25150 |
25.40 |
150.00 |
363.80 |
4.00 |
3.80 |
148.83 |
|
PCXS25200 |
25.40 |
200.00 |
485.06 |
4.00 |
3.80 |
198.83 |
|
PCXS25500 |
25.40 |
500.00 |
1212.65 |
2.10 |
2.00 |
499.39 |
|
PCXS25750 |
25.40 |
750.00 |
1818.98 |
2.00 |
2.00 |
749.42 |
|
PCXS25101 |
25.40 |
1000.00 |
2425.30 |
2.00 |
2.00 |
999.42 |