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Why quartz can be used as optical glass
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Quartz glass has its own unique optical properties. It can not only transmit the far ultraviolet spectrum, which is better than all ultraviolet transparent materials, but also transmit visible light and near infrared spectrum. Users can choose the desired variety from the range of 185-3500mμ according to their needs. Because quartz glass is resistant to high temperatures, has a small thermal expansion coefficient, good chemical thermal stability, bubbles, streaks, uniformity, and birefringence are comparable to ordinary optical glass, it is an optical system with high stability when working in various harsh environments The essential optical materials.
The structure of quartz glass, impurity content, OH heredity factor and the content of NO, CO, etc. are the main factors affecting the spectral transmittance. Poor oxygen atom bonding has an absorption peak at 0.24μ. Quartz glass containing OH groups is at 2.7 There will be an obvious absorption peak due to molecular vibration at μ. The low UV transmittance is mainly due to the atomic absorption spectrum caused by metal impurities.
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