03 May Zinc Selenide (ZnSe)
Posted at 16:39h
in Zinc Selenide (ZnSe)
Zinc Selenide (ZnSe) is a chemical inert material. It is commonly used for lenses, windows and prisms especially for CO2 high power lasers
| Specification | |
|---|---|
| Transmission wavelength | 0.5µm -22µm |
| Material | Zinc Selenide (ZnSe) |
| Crystallin estructure | Cube |
| Density (gr/cm³) | 5.27 |
| Resistivity Ω/cm | ~10¹² |
| Melting point (°C) | 1525 |
| Optical purity | 99.9996 |
| Thermal expansion coefficient (1/k) | 7.1*10¯⁶ @273k 7.8*10¯⁶ @373k 8.3*10¯⁸ @473k |
| Thermal Conductivity (J/k.m.s.) | 18.0 @298k |
| Specific heat (J/g.k) | 0.339 @298k |
| Knoop hardness (Kg/mm²) | 110 |
| Young modulus (GPa) | 67.2 |
| Bending strength (Mpa) | 55 |
| Poisson ratio | 0.28 |
Zinc Selenide (ZnSe)
prism (large size, rhombic, ATR, powell, right angle…)
| Technical parameter | 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' | ±10" | ±2"-5" |
| Surface quality | 60-40 | 40-20 | 20-10 |
| Surface accuracy | 1.0λ | λ/10 | λ/20 |
| Coating | AR/AR 7-12µm / 10.6µm / 2-13µm | ||
| Bevelling | 0.1-0.5mmx45° | ||
| Substrate | CVD Zinc Selenide (ZnSe) | ||
Zinc Selenide (ZnSe)
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' | ±15" | ±2" |
| Surface quality | 60-40 | 40-20 | 20-10 |
| Surface accuracy | 1.0λ | λ/10 | λ/20 |
| Coating | 10.6µm AR/AR <2% each surface | ||
| Bevelling | 0.1-0.5mmx45° | ||
| Substrate | CVD Zinc Selenide (ZnSe) | ||