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Proceedings Paper

Time-resolved spectroscopic investigation of emission observed during damage in the bulk of fused silica and DKDP crystals
Author(s): Christopher W. Carr; Harry B. Radousky; Michael C Staggs; Alexander M. Rubenchik; Michael D. Feit; Stavros G. Demos
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Paper Abstract

We have investigated the flash of light that accompanies laser damage using time-resolved spectroscopy. Damage events were initiated in the bulk of both fused silica and DKDP crystals with 355-nm 3-ns pulsed radiation. Spectra from the accompanying flash were recorded in the 200-500 nm wavelength range with 5-ns temporal resolution. Ten ns following damage initiation, the spectra were found to be roughly blackbody with temperatures on the order of 5000 K to 7000 K, depending on the material studied and excitation energy used. The observed temperatures and cooling rates can be related to the size and electron density of the plasma fireball that initiates the damage event.

Paper Details

Date Published: 9 April 2002
PDF: 8 pages
Proc. SPIE 4679, Laser-Induced Damage in Optical Materials: 2001, (9 April 2002); doi: 10.1117/12.461714
Show Author Affiliations
Christopher W. Carr, Lawrence Livermore National Lab. and Univ. of California/Davis (United States)
Harry B. Radousky, Lawrence Livermore National Lab. and Univ. of California/Davis (United States)
Michael C Staggs, Lawrence Livermore National Lab. (United States)
Alexander M. Rubenchik, Lawrence Livermore National Lab. (United States)
Michael D. Feit, Lawrence Livermore National Lab. (United States)
Stavros G. Demos, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 4679:
Laser-Induced Damage in Optical Materials: 2001
Gregory J. Exarhos; Arthur H. Guenther; Keith L. Lewis; M. J. Soileau; Christopher J. Stolz, Editor(s)

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