Sapphire Windows
Original price was: $23.00.$16.10Current price is: $16.10.
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TECHSPEC® Sapphire Windows are manufactured from single crystal sapphire, making them ideal for demanding applications (such as laser systems) because of their extreme surface hardness, high thermal conductivity, high dielectric constant and resistance to common chemical acids and alkalis. Sapphire is the second hardest crystal next to diamond and, because of their structural strength, sapphire windows can be made much thinner than other common windows with improved transmittance. Chemically, sapphire is single crystal aluminum oxide (Al2O3) and is useful in a transmission range from 330 – 5500nm when uncoated. TECHSPEC® Sapphire Windows are available with anti-reflection (AR) coatings to improve performance in the visible, NIR, and IR spectra with coating options covering 400 – 5000nm.
- Features Extreme Surface Hardness Chemical Resistance
- Transmits Wavelengths Ranging From UV to Mid-Infrared
- Thinner and Stronger than Standard Glass Windows
- Anti-Reflection Coating Options Covering 400 – 5000nm Available
| Abbe Number (vd) | 72.24 |
|---|---|
| Axis Orientation | Random |
| Bevel | Protective as needed |
| Birefringence (no-ne) | 0.008 for Visible Light Orthogonal to Optical Axis |
| Clear Aperture (%) | ≥90 |
| Coefficient of Thermal Expansion CTE (10-6/°C) | 8.8 |
| Density (g/cm3) | 3.97 |
| Edges | Fine Ground |
| Index of Refraction nd | 1.77 |
| Knoop Hardness (kg/mm2) | 1900 |
| Parallelism (arcmin) | ≤3.5 |
| Poisson's Ratio | 0.27 |
| Substrate | Sapphire (Al2O3) |
| Surface Quality | 80-50 |
| Young's Modulus (GPa) | 435 |
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