skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Evaluation of UV absorption coefficient in laser-modified fused silica

Abstract

Laser-induced damage in transparent dielectrics leads to the formation of laser-modified material as a result of exposure to extreme localized temperatures and pressures. In this work, an infrared thermal imaging system in combination with a fluorescence microscope is used to map the dynamics of the local surface temperature and fluorescence intensity under cw, UV excitation of laser-modified fused silica within a damage site. The energy deposited via linear absorption mechanisms and the absorption coefficient of the modified material are estimated based on a thermal diffusion model. In addition, irreversible changes in the absorption following extended laser exposure were observed.

Authors:
; ; ; ; ;  [1]
  1. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550-0808 (United States)
Publication Date:
OSTI Identifier:
20971805
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 90; Journal Issue: 6; Other Information: DOI: 10.1063/1.2472775; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION; EXCITATION; FERROELECTRIC MATERIALS; FLUORESCENCE; LASERS; MICROSCOPES; SILICA; THERMAL DIFFUSION; ULTRAVIOLET SPECTRA

Citation Formats

Negres, R. A., Burke, M. W., Sutton, S. B., DeMange, P., Feit, M. D., and Demos, S. G.. Evaluation of UV absorption coefficient in laser-modified fused silica. United States: N. p., 2007. Web. doi:10.1063/1.2472775.
Negres, R. A., Burke, M. W., Sutton, S. B., DeMange, P., Feit, M. D., & Demos, S. G.. Evaluation of UV absorption coefficient in laser-modified fused silica. United States. doi:10.1063/1.2472775.
Negres, R. A., Burke, M. W., Sutton, S. B., DeMange, P., Feit, M. D., and Demos, S. G.. Mon . "Evaluation of UV absorption coefficient in laser-modified fused silica". United States. doi:10.1063/1.2472775.
@article{osti_20971805,
title = {Evaluation of UV absorption coefficient in laser-modified fused silica},
author = {Negres, R. A. and Burke, M. W. and Sutton, S. B. and DeMange, P. and Feit, M. D. and Demos, S. G.},
abstractNote = {Laser-induced damage in transparent dielectrics leads to the formation of laser-modified material as a result of exposure to extreme localized temperatures and pressures. In this work, an infrared thermal imaging system in combination with a fluorescence microscope is used to map the dynamics of the local surface temperature and fluorescence intensity under cw, UV excitation of laser-modified fused silica within a damage site. The energy deposited via linear absorption mechanisms and the absorption coefficient of the modified material are estimated based on a thermal diffusion model. In addition, irreversible changes in the absorption following extended laser exposure were observed.},
doi = {10.1063/1.2472775},
journal = {Applied Physics Letters},
number = 6,
volume = 90,
place = {United States},
year = {Mon Feb 05 00:00:00 EST 2007},
month = {Mon Feb 05 00:00:00 EST 2007}
}