Why use fused silica in optical components?

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In optics, fused silica provides excellent UV transmission and can be manufactured to facilitate the transmission of infrared wavelengths. Coupled with low refractive index variation, it exhibits ideal optical qualities for high-precision optical applications. In addition, the physical properties of fused silica glass make it particularly suitable for high-performance applications in harsh conditions. Some of its most useful properties include:

▷ Extremely high hardness

▷ High-temperature resistance

▷ Broad optical transmission in the UV spectrum, but some IR fused silica glass can be used

▷ Extremely low permeability

▷ Low coefficient of thermal expansion (CTE)

▷ High chemical purity

▷ Excellent corrosion resistance

▷ Excellent electrical insulation properties

▷ The low refractive index change

▷ Low birefringence value

▷ Large size capability

▷ State-of-the-art homogenization level

 

Internal Transmittance of high-quality JGS1 from China:


UV Fused Silica


Thermal properties

Fused silica has exceptional thermal properties that make it ideal for use in optical components. With its low coefficient of thermal expansion (CTE) and extremely high-temperature resistance, the accuracy of optical components made of fused silica can be trusted even in high-temperature applications. The extremely low thermal conductivity of fused silica makes it an excellent insulating material. Fused silica is extremely resistant to thermal shock and can withstand extreme temperature fluctuations during the manufacturing process, making it easier to quench quartz glass components quickly without compromising the strength of the material. 

 

What optical applications use fused silica?

The high strength and unique thermal properties of fused silica make it ideal for a variety of optical applications that require a high level of durability, precision, and tolerance to wide temperature fluctuations. 

Some of the most common optical applications that benefit from fused silica components include

▷ Microwave and millimeter-wave components

▷ High-temperature lamp housings

▷ Temperature insensitive optics support

▷ Aerospace radar windows

▷ Lenses and mirrors in highly variable temperature states

 

We produce fused silica windows every day. Suitable for less harsh environments where good UV performance is required. Custom sizes are manufactured to your exact specifications, creating a cost effective window for your optical application. Fused silica is available in a variety of qualities and grades and transmits well at a variety of wavelengths. 

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