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Si (Silicon)

SiliconSi (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