Open AccessTime-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
Publication year - 2002
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.461714
Subject(s) - materials science , spectral line , spectroscopy , wavelength , radiation , black body radiation , laser , radiation damage , analytical chemistry (journal) , plasma , flash (photography) , atomic physics , molecular physics , optics , chemistry , optoelectronics , physics , quantum mechanics , astronomy , chromatography
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.
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