When you need a substrate that can handle very high temperatures and work as an insulator in semiconductors, then JGS2 Grade Fused Silica Wafers is the right choice.
|Tramission Range (medium transmission ratio)||0.26~2.10um (Tavg>85%)|
|Fluorescence (ex 254nm)||Strong v-b|
|Impurity Content||20-40 ppm|
|Birefringent constant||4-6 nm/cm|
|Melting Method||Oxy-hydrogen melting|
A large selection of fused silica windows JGS2 Optical Grade can be found here.
Other fused silica wafer grades and their applications include: