Frequency-tunable UV laser system for biological and chemical detection

James E. Gorda; Eric D. Park; Martin C. Richardson; Jay A. Fox; Cynthia R. Swim

doi:10.1117/12.243269

17 June 1996 Frequency-tunable UV laser system for biological and chemical detection

James E. Gorda, Eric D. Park, Martin C. Richardson, Jay A. Fox, Cynthia R. Swim

Proceedings Volume 2763, Electro-Optical Technology for Remote Chemical Detection and Identification; (1996) https://doi.org/10.1117/12.243269
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

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.

Citation Download Citation

James E. Gorda, Eric D. Park, Martin C. Richardson, Jay A. Fox, and Cynthia R. Swim "Frequency-tunable UV laser system for biological and chemical detection", Proc. SPIE 2763, Electro-Optical Technology for Remote Chemical Detection and Identification, (17 June 1996); https://doi.org/10.1117/12.243269

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