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Proceedings Paper

Threshold conditions for a random laser mode
Author(s): Messaoud Bahoura; Natalia Noginova; Kaleem J. Morris; Guohua Zhu; Starre Williams; Jacob Novak; Ichesia Fowlkes; Aubry Franz; Mikhail A. Noginov
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Paper Abstract

Stimulated emission in Nd0.5La0.5Al3(BO3)4 ceramic random laser was studied at different diameters of the pumped spot d. The developed heuristic model adequately describes the dependence of threshold pumping energy density versus d at d greater or equal to 150 micrometer. At small pumping beam diameter (less than 100 micrometer), very bright and strongly localized emission spot was observed in the center of the pumped area. The spectrum of the bright-spot emission appeared to be similar to that of 'continuum wave' light sources.

Paper Details

Date Published: 16 June 2003
PDF: 10 pages
Proc. SPIE 4970, Laser Crystals, Glasses, and Nonlinear Materials Growth and Characterization, (16 June 2003); doi: 10.1117/12.501649
Show Author Affiliations
Messaoud Bahoura, Norfolk State Univ. (United States)
Natalia Noginova, Norfolk State Univ. (United States)
Kaleem J. Morris, Norfolk State Univ. (United States)
Guohua Zhu, Norfolk State Univ. (United States)
Starre Williams, Norfolk State Univ. (United States)
Jacob Novak, Norfolk State Univ. (United States)
Ichesia Fowlkes, Norfolk State Univ. (United States)
Aubry Franz, Norfolk State Univ. (United States)
Mikhail A. Noginov, Norfolk State Univ. (United States)

Published in SPIE Proceedings Vol. 4970:
Laser Crystals, Glasses, and Nonlinear Materials Growth and Characterization
Yehoshua Y. Kalisky, Editor(s)

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