Intracavity Optical Damage Due To Electrons, Ions And Ultraviolet Photons

Richard F Haglund Jr.

doi:10.1117/12.944444

27 June 1988 Intracavity Optical Damage Due To Electrons, Ions And Ultraviolet Photons

Richard F Haglund Jr.

Proceedings Volume 0895, Laser Optics for Intracavity and Extracavity Applications; (1988) https://doi.org/10.1117/12.944444
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

Many of the damage problems experienced by intracavity laser optics, particularly for discharge-pumped and electron-beam-pumped laser systems, arise from the electronic interactions of low-energy electrons, ions and ultraviolet photons with the surface and near-surface regions of the optical material. We shall describe results of recent experiments which display some of the electronic mechanisms involved in these processes, through which incident electronic energy is absorbed, localized, transformed and ultimately dissipated in ways which change the surface composition and electronic structure of model wide bandgap optical materials. We consider discuss recent experimental results on the metallization of dielectric surfaces, the effects of adsorbed overlayers in inhibiting desorption of excited neutral atoms, and the effects of glass processing on response to electron and ion irradiation. We also point out some of the ways in which the changes in the optical surfaces wrought by the low-energy and low-intensity irradiation arising from the laser pumping mechanism can influence thermal, chemical and plasma properties of the surface in ways which alter the surface response to intense laser radiation.

Citation Download Citation

Richard F Haglund Jr. "Intracavity Optical Damage Due To Electrons, Ions And Ultraviolet Photons", Proc. SPIE 0895, Laser Optics for Intracavity and Extracavity Applications, (27 June 1988); https://doi.org/10.1117/12.944444

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