Crystals Materials
Zinc Selenide (ZnSe) for high-power CO2 laser optical components
Zinc selenide (ZnSe) is an optical inert material known for its high purity, strong environmental adaptability, and ease of processing. It exhibits minimal light transmission loss and excellent transparency. With low absorption and resistance to thermal shock, zinc selenide material has high transmittance in the wavelength range of 600 nm to 16 μm, making it the preferred material for high-power CO2 laser optical components.
| Material | Zinc Selenide (ZnSe) |
| Diameter | 3mm ~ 300mm |
| Thickness | >0.1mm |
| Dimension Tolerance | +0/-0.02mm |
| Angle Tolerance | ±15 arcsec |
| Surface Accuracy | λ/10 @ 633nm |
| Surface Quality S/D | 10–5 |
| Pyramid Tolerance | <5 arcmin |
| Bevel | <0.25mm X 45° |
| Coating | Available upon request |
| Crystal Structure | Cubic |
| Density | 5.27 g/cm³ |
| Crystal Size | <100 μm |
| Impurities | None > 0.05 mm |
| Resistivity | > 10^12 ohm-cm |
| Dielectric Constant | Consult Technical Personnel |
| Absorption Coefficient @10.6μm | <0.0005 cm^-1 |
| Thermal Optical Coefficient (dn/dT) @10.6μm | 6.1 × 10^-5 ℃ |
| Refractive Index Uniformity @0.6328μm | <3 × 10^-6 |
| Thermal Conductivity @20°C | 0.18 W/cm/℃ |
| Specific Heat | 0.356 J/g/℃ |
| Linear Expansion Coefficient @20°C | 7.57 × 10^-6/℃ |
| Young's Modulus | 67.2 GPa (9.75 × 10^6 psi) |
| Fracture Modulus | 55.1 MPa (8,000 psi) |
| Knoop Hardness | 105-120 kg/mm² |
| Poisson's Ratio | 0.28 |
| Fracture Toughness | 0.5 × 10^6 N/m^3/2 |
Stock specification list
If need other specifications and quantities products, please contact us(sales@aogcrystal.com).
Anti-reflection coatings are available at your specified wavelength.
Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
To inquiry or order a finished Zinc Selenide (ZnSe) windows, please specify the specification listed above, for common application, we only need to know the main specification: Cr-dopant concentration, sizes, and coating. For special
request, please specify specification in details for evaluation and fabrication.
| Part Number | Face size | Thickness | Surface Quality | Coating |
|---|---|---|---|---|
| WIN-080-020-ZnSe | Dia 8.00 mm | 2.00 mm | 40/20 | UnCoated |
| WIN-127-020-ZnSe | Dia 12.70 mm | 2.00 mm | 40/20 | UnCoated |
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