Solarization and fluorescence phenomena in DUV-transmitting boron crown glasses

Thomas Kloss

doi:10.1117/12.138932

11 January 1993 Solarization and fluorescence phenomena in DUV-transmitting boron crown glasses

Thomas Kloss

Proceedings Volume 1761, Damage to Space Optics, and Properties and Characteristics of Optical Glass; (1993) https://doi.org/10.1117/12.138932
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

Some special minor, but also main, glass components are photochemically sensitive substances. After being exposed to DUV-radiation glasses can show solarization, fluorescence, and defect absorption phenomena. A new alumina boron crown glass family based on oxidic components has good potentials for all applications of UV optical systems and also photochemical technology processes. In this brief paper we discuss by means of a model glass systems special effects in ultrapure glasses melted under reducing conditions. Irradiated glasses showed a strong dependence of solarization on the specific glass composition. A KrF excimer laser of Jenoptik GmbH Jena was used as an excitation source. Doses of 25 - 80 J/cm² were tested. Three characteristic defect absorption bands were observed in alumina boron crown glasses having iron impurities less than 5 ppm melted under reducing conditions. Excitation into the wavelength of maximum absorption causes characteristic fluorescence. Correlations to structural units with the help of RAMAN and NMR spectroscopy techniques are discussed.

Citation Download Citation

Thomas Kloss "Solarization and fluorescence phenomena in DUV-transmitting boron crown glasses", Proc. SPIE 1761, Damage to Space Optics, and Properties and Characteristics of Optical Glass, (11 January 1993); https://doi.org/10.1117/12.138932

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