Description
Shape Optics Zinc Selenide (ZnSe) Protective Window Specifications
| Parameter | Specification |
|---|---|
| Bevel | Protective as needed |
| Clear Aperture CA (mm) | 9.00 |
| Clear Aperture (%) | 90 |
| Diameter (mm) | 10.00 +0.0/-0.1 |
| Thickness (mm) | 1.50 ±0.1 |
| Coating | BBAR (8000-12000nm) |
| Coating Specification | R_avg ≤0.5% @ 8 – 12µm |
| Density (g/cm³) | 5.27 |
| Coefficient of Thermal Expansion CTE (10^-6/°C) | 7.57 |
| Edges | Fine Ground |
| Index of Refraction n_d | 2.631 |
| Knoop Hardness (kg/mm²) | 120 |
| Poisson’s Ratio | 0.28 |
| Parallelism (arcmin) | <1 |
| Substrate | Zinc Selenide (ZnSe) |
| Surface Quality | 60-40 |
| Surface Flatness (P-V) | λ/10 @ 10.6µm |
| Type | Protective Window |
| Wavelength Range (nm) | 8000 – 12000 |
These specifications outline the key parameters and characteristics of SHAPE OPTICS Zinc Selenide (ZnSe) Protective Windows, making them suitable for a wide range of infrared optical applications.
Zinc Selenide (ZnSe) is a versatile material in optical engineering because of its broad transmission range and specific properties. Here are some key points about it:
- Applications:
- Infrared Optics: ZnSe is widely used for infrared (IR) applications due to its high transmittance across a broad spectral range, particularly from 0.5 to 22 microns. It is suitable for windows, lenses, mirrors, and prisms.
- CO2 Lasers: It is a preferred material for high-power CO2 laser optics, especially at 10.6 microns, the wavelength at which CO2 lasers operate.
- Manufacturing:
- ZnSe is synthesized by combining zinc vapor and hydrogen selenide gas. The synthesis process allows it to form as sheets on graphite susceptors.
- The material is microcrystalline in structure, and grain size is carefully controlled for optimal mechanical strength.
- Single-crystal ZnSe is also available and used in specific applications where higher purity and uniformity are needed.
These characteristics make ZnSe a sought-after material for high-performance optical applications, especially where thermal durability and broad-spectrum transmittance are required.
