29 March 1996 Extending spectral coverage of gas lasers using EO and AO modulators: spectral purity issues
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Abstract
Both EO and AO modulators can be used to extend the spectral coverage of CO2 lasers in the 9 - 11 micrometers region. For laser radar local oscillator application, the spectral purity of the frequency shifter output must be high and can be achieved with an AO frequency shifter using a special modulator configuration and a molecular absorption technique. A 500 MHz AO frequency shifter was designed, tested and shown to have a high spectral purity at an output power level of over 50 mW with a conversion efficiency of a few percent.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Richard S. Eng, Victor H. Hasson, Benjamin C. Willman, Francis J. Corbett, Michael E. Trainor, Manhar L. Shah, "Extending spectral coverage of gas lasers using EO and AO modulators: spectral purity issues", Proc. SPIE 2702, Gas and Chemical Lasers, (29 March 1996); doi: 10.1117/12.236867; https://doi.org/10.1117/12.236867
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