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Proceedings Paper

Continuous wave difference frequency generation using AgGaS2: problems encountered in power scaling
Author(s): Charles E. Miller; Wode C. Eckhoff; Ulrich Simon; Frank K. Tittel; Robert F. Curl
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Paper Abstract

We report the results of our efforts to increase the infrared output power from a cw difference frequency generation source based on the nonlinear material AgGaS2 for use in infrared kinetic spectroscopy. Experimental and theoretical infrared conversion efficiencies are compared as a function of pump power, signal power, and focusing conditions. The predicted and observed IR yields agree well for the unfocused beam; however, the agreement is poor (experimental conversion a factor of 3 to 5 less than theory) for all focused conditions. The highest IR output powers obtained corresponded to experimental conditions that are slightly overfocused compared to the theoretical optimum. Thermal loading of the AgGaS2 decreases the parametric conversion efficiency when the power in one of the input lasers beams exceeds approximately 800 mW. Infrared powers of 10 to 30 (mu) W have been achieved near 5.2 micrometers . Future improved crystals should yield powers at the AP 500-(mu) W level.

Paper Details

Date Published: 2 June 1994
PDF: 8 pages
Proc. SPIE 2145, Nonlinear Optics for High-Speed Electronics and Optical Frequency Conversion, (2 June 1994); doi: 10.1117/12.177152
Show Author Affiliations
Charles E. Miller, Rice Univ. (United States)
Wode C. Eckhoff, Rice Univ. (United States)
Ulrich Simon, Rice Univ. (Germany)
Frank K. Tittel, Rice Univ. (United States)
Robert F. Curl, Rice Univ. (United States)

Published in SPIE Proceedings Vol. 2145:
Nonlinear Optics for High-Speed Electronics and Optical Frequency Conversion
Nasser Peyghambarian; Robert C. Eckardt; Nasser Peyghambarian; Henry Everitt; Dennis D. Lowenthal; Henry Everitt; Robert C. Eckardt; Dennis D. Lowenthal, Editor(s)

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