Laser UVFS Windows
Fused silica glass is an ideal ultraviolet optical material, offering high transmittance across the spectral range of 220 nm to 2500 nm, along with excellent chemical stability and a low thermal expansion coefficient.
This series of fused silica windows is available in uncoated and multiple anti-reflection coated versions. Uncoated windows feature a typical surface reflection loss of 4% per surface, while AR coatings reduce the average surface reflectance to Rave < 0.5% within the specified wavelength band.
These high-precision fused silica windows adopt laser-grade surface quality and parallelism specifications. They feature a transmitted wavefront distortion of λ/10 and parallelism better than 5 arcseconds. With a high laser-induced damage threshold, they are well suited for laser systems and industrial optical applications.
Features
- Coating: Uncoated, multi-layer anti-reflection coating
- Available options: AR350-750 nm, AR700-1100 nm, AR1050-1700 nm
- Reflectivity & Laser Damage Threshold:
–AR350-750 nm: Rave < 0.5%@350–750 nm; Laser damage threshold > 7.5 J/cm² (10 ns pulse, 10 Hz@532 nm)
–AR700-1100 nm: Rave < 0.5%@700–1100 nm; Laser damage threshold > 7.5 J/cm² (10 ns pulse, 10 Hz@1064 nm)
–AR1050-1700 nm: Rave < 0.5%@1050–1700 nm; Laser damage threshold > 7.5 J/cm² (10 ns pulse, 10 Hz@1064 nm)
Parameters
| Diameter Tolerance | + 0.0/ – 0.1 mm |
| Transmitted Wavefront Distortion | λ/10 |
| Parallelism | < 5″ |
| Surface Quality | II |
Model
| Size, Dia. X T, mm | Coating |
| Φ12.7 x 3 | Uncoated, AR350-750 nm, AR700-1100 nm, AR1050-1700 nm |
| Φ25.4 x 5 | |
| Φ50.8 x 12 | |
| 25 x 36 x 1* | Uncoated |
* Transmitted Wavefront Distortion: λ/4.