Parameters of optical grade silicon
|
Materials |
Optical Grade Silicon |
|
Purity |
>99.9999% |
|
Growth method |
FZ |
|
Type |
N or P |
|
Orientation |
<100> or <111> |
|
Resistivity |
>100 ohm.cm |
|
Transmittance |
>52.5% |
|
Oxygen Concentration(1/cm3) |
≦1×10E16 |
|
Carbon Concentration(1/cm3) |
≦1×10E15 |
|
Doping Element Concentration(1/cm3) |
≦1×10E17 |
|
Coefficient of thermal expension |
2.5(T=300k) |
|
Linear Expension Coefficient |
(2-9)×10-6 k-1 |
|
Hardness, Mohs |
7.0 |
|
Density |
2.33g/cm3 |
|
Melting point |
1414℃ |
|
Dielectric Constant |
13 |
|
Optical Properties |
|||
|
Transmission Range |
1.2~8µm |
||
|
Reflection Loss, for two surfaces at 5µm |
46.20% |
||
|
Reflection Index |
See below |
||
|
Wavelength (µm) |
Refractive Index (n) |
Wavelength (µm) |
Refractive Index(n) |
|
1.357 |
/ |
5.5 |
3.4213 |
|
1.3951 |
3.4975 |
6 |
3.4202 |
|
1.6606 |
3.4929 |
6.5 |
3.4195 |
|
1.8131 |
3.4608 |
7 |
3.4189 |
|
2.1526 |
3.4476 |
7.5 |
3.4186 |
|
2.3254 |
3.443 |
8 |
3.4184 |
|
3 |
3.432 |
8.5 |
3.4182 |
|
3.5 |
3.4284 |
10 |
3.4179 |
|
4 |
3.4257 |
10.5 |
3.4178 |
|
4.5 |
3.4236 |
11.04 |
3.4176 |
|
5 |
3.4223 |
|
|
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