Photodynamics and stability of laser active (F+2)A centers
- 1 November 1983
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 54 (11), 6193-6198
- https://doi.org/10.1063/1.331934
Abstract
In additively colored KCl : Li crystals, the (F+2)A color center laser operates through a photodynamic equilibrium in which UV excitation generates a partial conversion of (F2)A centers to (F+2)A. Evidence is presented which shows that continuous UV exposure is necessary to sustain laser action because of the neutralization of (F+2)A centers which occurs through the capture of F′A center electrons. The bleaching of FA centers results directly from absorption of the 1.3-μm pump radiation. Since the absorption is extremely weak, only modest UV intensities are needed for intense cw laser operation.Keywords
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