Silica Glass (SiO2)
Extreme chemical purity, high UV/NIR transmission, and strong thermal shock resistance. Specified for high-power laser optics and interferometry master flats.
Flat optics material
Typical properties
- Transmission range
- 0.18 – 2.2 µm
- Refractive index
- 1.4585 (nd)
- Knoop hardness
- 500 – 600 kg/mm²
- Density
- 2.20 g/cm³
- Thermal expansion (CTE)
- 0.55 × 10⁻⁶ /K
Published values for this material class, given to help you shortlist a substrate. They are not lot-specific guarantees. Request the SPEKTON datasheet for certified figures against your specification.
Download Technical Datasheet (PDF)Datasheet referenced from Crystran.
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