Quartz, especially fused silica, is popular in optical applications. Its unique properties make it a top choice. But do you know why fused silica works well as a key part of optical glass use? Some excellent properties of fused silica determine its importance.
Properties of Fused Silica
1. High transmittance
Fused silica transmits light from the UV to the IR spectrum. Quartz glass is classified into JGS1, JGS2, and JGS3 based on the wave band. This classification relates to the OH group content in the material. JGS1 is UV-grade quartz glass with high transmittance (about 93.5%) in the 180-2500 nm wave band. JGS2 quartz glass is transparent in the 220-2500 nm wave band, with a transmittance of over 93.5%. JGS3 is an infrared-grade quartz glass. It has a transmittance of over 93.5% in the near-ultraviolet to visible light range (260-700 nm). Plus, it also shows high transmittance in the 700-3500 nm range.
2. High heat resistance
Quartz glass has a low thermal expansion coefficient. It can handle extreme temperature changes. They heat quartz glass to about 1100 ℃, and it does not burst in normal temperature water.
The softening point of quartz glass is around 1730°C. It can last at 1100°C for a long time. For short periods, it can handle up to 1450°C.
3. Corrosion resistance
Quartz glass rarely reacts with acids, except for hydrofluoric acid. Its acid resistance is 30 times greater than that of ceramics.
High chemical purity and excellent hardness.
Fused Silica Optical Applications:
Fused silica has great optical, mechanical, and thermal properties. So, it is widely used across all spectra.
1. UV Applications:
Laser Nuclear Technology, Microlithography, Spectroscopy, Signal Coupling
2. Infrared applications:
high-end infrared lenses, high-precision optoelectronic devices
3. Visible Light Applications:
Spectrophotometers
Hengshui Aohong Glass makes various high-quality optical and quartz glass products. If you’re interested, feel free to contact us.
