Excimer-laser induced degradation in bulk-fused silica

Mordechai Rothschild; Jan H. C. Sedlacek

doi:10.1117/12.147397

24 June 1993 Excimer-laser induced degradation in bulk-fused silica

Mordechai Rothschild, Jan H. C. Sedlacek

Proceedings Volume 1848, 24th Annual Boulder Damage Symposium Proceedings -- Laser-Induced Damage in Optical Materials: 1992; (1993) https://doi.org/10.1117/12.147397
Event: Optical Materials for High Power Lasers, 1992, Boulder, CO, United States

Abstract

Excimer laser irradiation of fused silica is shown to induce gradual changes in the material, which affect its optical properties. These changes include visible fluorescence, formation of absorption bands at approximately 215 nm (E' centers), and increases in density and index of refraction. The magnitude of these effects varies initially as the square of the laser fluence and linearly with the number of pulses, indicating that they are the result of a two- photon absorption process. Pre-or post-irradiation treatments can be used to reduce the amount of laser induced degradation, especially the formation of color centers.

Citation Download Citation

Mordechai Rothschild and Jan H. C. Sedlacek "Excimer-laser induced degradation in bulk-fused silica", Proc. SPIE 1848, 24th Annual Boulder Damage Symposium Proceedings -- Laser-Induced Damage in Optical Materials: 1992, (24 June 1993); https://doi.org/10.1117/12.147397

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