Products & Services
- Windows
- Prisms
- Spherical Lenses
- Cylindrical Lenses
- Mirrors
- Beamsplitters
- Polarization Optics
- Singlet True Zero Order Waveplate
- Cemented True Zero Order Waveplate
- Cemented Zero Order Waveplate
- Optical Contact Zero Order Waveplate
- Air-Spaced Zero Order Waveplate
- Low Order Waveplate
- Multi-Order Waveplate
- Narrow Band Polarization Beamsplitter Cube
- Broadband Polarization Beamsplitter Cube
- Rotator
- Glan Taylor Polarizer
- Glan Laser Polarizer
- Glan Thompson Polarizer
- Glan Thompson Polarization Beamsplitter Cube
- Wollaston Polarizer
- Rochon Polarizer
- Broadband Polarization Beam Combiner
- Brewster Polarizer
- Brewster Window
- Coatings
Links
Windows
Optical windows are optical glass with ground and polished faces that are relatively parallel. They are used as a protective element between two environments and their impact on the passage of visible light is neutral. When selecting windows you should consider the following properties, transmission, scattering, wavefront distortion, parallelism and resistance to certain environment. Eastoptics offers a wide range windows. Special materials are available upon requset. Eastoptics provides varieties of single layer or multi-layer anti-reflecting coating on optical windows. please refer to the coating chapter for more information.
| Material | Properties | Application |
|---|---|---|
| BK7 |
Transmission Range:330-2100nm Refractive Index:1.5164@588nm Thermal Expansion Coefficient:7.5×10-6K Density:2.52g/cm3 |
Good performance over visible and near IR spectrum for most application. |
| Fused silica |
Transmission Range:185-2500nm Refractive Index:1.4858@308nm Thermal Expansion Coefficient:0.54×10-6K Density:2.2g/cm3 |
Better performance from UV to IR spectrum. Also,it is the best choice for resistance thermal application. |
| Sapphire |
Transmission Range:180nm-4500nm Refractive Index:1.755@1000nm Thermal Expansion Coefficient:8.4×10-6K Density:3.98g/cm3 |
Suit for scratch resistance application with better transmission over the wide range spectrum.It can be made much thinner. |
| Calcium Fluoride |
Transmission Range:170-7800nm Refractive Index:1.399@5000nm Thermal Expansion Coefficient:18.85×10-6K Density:3.18g/cm3 |
It is applicable for wide rang spectrum, and it is particularly useful for IR laser application. |
| Magnesium Fluoride |
Transmission Range: 120-7000nm Refractive Index:1.376@700nm Thermal Expansion Coefficient:13.7×10-6K（13.7||a;8.48||c） Density:3.17g/cm3 |
It is applicable for wide range spectrum, and it is particularly useful for Excimer laser application. |
| Si |
Transmission Range: 1200~7000nm Refractive Index:3.426@5000nm Thermal Expansion Coefficient:2.55×10-6K Density:2.33g/cm3 |
IR application |
| Ge |
Transmission Range: 2000~14000nm Refractive Index:4.003@10000nm Thermal Expansion Coefficient:5.5×10-6K Density:5.33g/cm3 |
IR application |
| ZnSe |
Transmission Range: 550~19000nm Refractive Index:5.27@5000nm Thermal Expansion Coefficient:7.60×10-6K Density:5.27g/cm3 |
IR application |
