Calcium Fluoride (CaF2) Windows
Original price was: $105.00.$73.50Current price is: $73.50.
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TECHSPEC® Calcium Fluoride (CaF2) Windows offer a low index of refraction, providing high transmission from 200 – 7000nm when used uncoated. To further increase transmission and reduce back reflections, a variety of AR coatings are available spanning wavelength regions from the Ultra-Violet (UV) to the Mid-Wave Infrared (MWIR). The high bulk damage threshold of calcium fluoride coupled with its low absorption makes it a popular choice for use with laser systems, including excimer lasers. TECHSPEC® Calcium Fluoride (CaF2) Windows are ideal for use as protective windows for gas detectors operating in the Vacuum UV (VUV) and MWIR, UV spectroscopy systems, cryogenically cooled thermal imaging systems, and as substrates for coatings requiring wideband substrate transmission.
Note: Calcium fluoride is a relatively soft optical material and is more susceptible to scratches than typical glass windows.
- Low Absorption, High Transmission UV Grade Calcium Fluoride
- Low Index of Refraction
- AR Coatings Spanning 250 – 5000nm Available
- Calcium Fluoride (CaF2) Wedged Windows also Available
| Abbe Number (vd) | 94.99 |
|---|---|
| Axis Orientation | Random |
| Bevel | Protective as needed |
| Clear Aperture (%) | 90 |
| Coefficient of Thermal Expansion CTE (10-6/°C) | 18.85 |
| Density (g/cm3) | 3.18 |
| Edges | Fine Ground |
| Index of Refraction nd | 1.434 |
| Knoop Hardness (kg/mm2) | 158.3 |
| Poisson's Ratio | 0.26 |
| Substrate | Calcium Fluoride (CaF2) Vacuum UV Grade |
| Young's Modulus (GPa) | 75.8 |
| Type of Window | Crystal |
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