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Proceedings Paper

New elements for laser optics: color centers modified by powerful laser radiation
Author(s): N. N. Il'ichev
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Paper Abstract

Results of experimental studies of bleaching of F-2 color centers (CC) in LiF crystals are presented. Bleaching of these centers was shown to take place in two-photon absorption from the excited state. The effect of bleaching on the emission of neodymium lasers with LiF:F-2-passive Q-switches was studied. Phenomenon of spontaneous narrowing of emission spectrum is due to arising in LiF:F-2 crystal of absorption grating (caused by destruction of F-2 CC), that has spectral-selective properties. Polarization characteristics of nonlinear transmission of YAG:Cr4+ crystal a model is developed, in which the absorption on the wavelength of 1.06 micrometers occurs due to three linear dipoles oriented along the crystallographic axes.

Paper Details

Date Published: 10 August 1994
PDF: 11 pages
Proc. SPIE 2096, Lasers in Optical Systems and Devices, (10 August 1994); doi: 10.1117/12.183125
Show Author Affiliations
N. N. Il'ichev, General Physics Institute (Russia)

Published in SPIE Proceedings Vol. 2096:
Lasers in Optical Systems and Devices
Artur A. Mak, Editor(s)

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