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Proceedings Paper

Frequency-tunable UV laser system for biological and chemical detection
Author(s): James E. Gorda; Eric D. Park; Martin C. Richardson; Jay A. Fox; Cynthia R. Swim
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Paper Abstract

An efficient, compact, tunable ultraviolet laser system has been constructed by frequency tripling a Q-switched, tunable near-infrared Cr:LiSAF laser source. The nonlinear conversion from the fundamental to the third harmonic was accomplished through second harmonic generation in lithium triborate (LBO) followed by sum frequency mixing of the fundamental and the second harmonic in beta-barium borate (BBO). Third harmonic output with this combination of nonlinear crystals has yielded 5 mJ of energy at 280 nm with an overall conversion efficiency of 7%. The Cr:LiSAF master oscillator has been modeled in detail to optimize performance. System specifications of tuning range, linewidth, output energy, temporal behavior, and repetition rate were determined by the end use application as a UV excitation source for a chemical and biological stand-off detection system.

Paper Details

Date Published: 17 June 1996
PDF: 7 pages
Proc. SPIE 2763, Electro-Optical Technology for Remote Chemical Detection and Identification, (17 June 1996); doi: 10.1117/12.243269
Show Author Affiliations
James E. Gorda, CREOL/Univ. of Central Florida (United States)
Eric D. Park, CREOL/Univ. of Central Florida (United States)
Martin C. Richardson, CREOL/Univ. of Central Florida (United States)
Jay A. Fox, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Cynthia R. Swim, U.S. Army Chemical and Biological Defense Command (United States)


Published in SPIE Proceedings Vol. 2763:
Electro-Optical Technology for Remote Chemical Detection and Identification
Mahmoud Fallahi; Ellen A. Howden, Editor(s)

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