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17 February 2011 Small signal gain in DPAL systems
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In this paper we describe a platform for small signal gain measurements for alkali atom laser systems based on the DPAL excitation method. We present initial results that clearly show the transition from absorption on the alkali atom D1 lines in Cs and Rb to optical transparency and positive gain. The achievement of optical gain is critically dependent upon alkali cell conditions and collision partners. We also present the first spatially resolved gain measurements in a DPAL system. The small signal gain methods described will be valuable tools for power scaling of these laser systems.
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Kristin L. Galbally-Kinney, Daniel L. Maser, William J. Kessler, Wilson T. Rawlins, and Steven J. Davis "Small signal gain in DPAL systems", Proc. SPIE 7915, High Energy/Average Power Lasers and Intense Beam Applications V, 791508 (17 February 2011);

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