03 May Silicon (Si)
Posted at 12:18h
in Silicon (Si)
Il Silicon single crystal is a chemical inert material with high hardness and a good transmission in the range 1-7μm. Silicon has a good thermal conductivity and a low density, it is commonly used for laser mirrors and optics in the range IR-FIR.
| Specification |
|
|---|---|
| Transmission | 1µm -10µm and 30µm 300µm |
| Material | Silicon (Si) |
| Density (gr/cm³) | 2.33 |
| Dielectric constant | 13@10GHZ |
| Melting point (°C) | 1420 |
| Coefficient of elasticity | C₁₁=167 C₁₁=65 C₁₁=80 |
| Thermal expansion coefficient (1/°C) | 4.15*10¯⁶ |
| Thermal Conductivity (J/k.m.s.) | 163.3 @273k |
| Specific heat (J/g.k) | 0.733 |
| Knoop hardness (Kg/mm²) | 1150 |
| Young modulus (GPa) | 131 |
| Shear modulus (GPa) | 79.9 |
| Poisson ratio | 0.266 |
| Bulk modulus (GPa) | 102 |
| Bulk Absorption coefficient (l/cm) | 1.6*10¯³ @3000nm |
| Thermo-optical coefficient | 1.6*10¯⁴ |
Silicon prism (large size, wedge, ATR, heteromorphic, right angle…)
| Technical parameters | Commercial grade | Precision grade | High precision grade |
|---|---|---|---|
| Dimension range | 1-300mm | 2-300mm | 2-300mm |
| Dimension tolerance | ±0.1mm | ±0.025mm | ±0.01mm |
| Thickness tolerance | ±0.1mm | ±0.025mm | ±0.01mm |
| Angle tolerance | ±3'-5' | ±15"-30" | ±2"-5" |
| Surface quality | 60-40 | 40-20 | 20-10 |
| Surface accuracy | 1.0λ | λ/10 | λ/20 |
| Coating | 3-5µm T>97% | ||
| Bevelling | 0.1-0.5mmx45° | ||
| Substrate | Optical grade silicon (Si) | ||
Silicon windows
| Technical parameter | Commercial grade | Precision grade | High precision grade |
|---|---|---|---|
| Dimension range | 1-600mm | 2-600mm | 2-600mm |
| Dimension tolerance | ±0.1mm | ±0.025mm | ±0.01mm |
| Thickness tolerance | ±0.1mm | ±0.025mm | ±0.01mm |
| Angle tolerance | ±3' | ±1' | ±5" |
| Surface quality | 60-40 | 40-20 | 20-10 |
| Surface accuracy | 1.0λ | λ/10 | λ/20 |
| Coating | AR 3-5µm | ||
| Bevelling | 0.1-0.5mmx45° | ||
| Substrate | Optical grade silicon (Si) | ||