A window with a substrate made of single-crystal germanium. Low absorption at the infrared region up to 20μm. With anti-reflective (AR) coating on the both faces, the product delivers superior transmission properties suitable for windows.
Features
- The AR-coated model offers high transmission properties for a wide range of light (3μm-5μm).
- The product can be used as a window for specimen observation, laser irradiation, etc.
Typical Specifications
| Model | GEWI | ||
| Wavelength Range | 3-10μm | 5-9μm | 2-13μm |
| AR Coating | Y | Y | N |
| Reflectance | < 4.0% | < 2.0% | – |
| (One Side) | |||
| Size | Φ25 x 1tmm, Φ30 x 1tmm | ||
| Substrate | Single-crystal germanium | ||
| Parallelism | Within 3 minutes | ||
| Scratch-Dig | 60-40 | ||
| Effective Diameter | 80% of the actual diameter | ||
Wavelength Characteristics of Reflectance(AR-coated_3-10μm)
Wavelength Characteristics of Reflectance(AR-coated_5-9μm)
Wavelength Characteristics of Reflectance(AR-uncoated)
