27 May 1998 Dynamics of gain-switched Cr:YAG lasers
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Abstract
An investigation of the influence of pump and laser excited state absorption (ESA), parasitic losses and pump parameters on Cr:YAG laser action has been carried out. A simple rate equation model has been extended to include ESA and dynamic pump effects. Results are compared with those obtained using a full spatio-temporal gain-switching model, and with experimental measurements in three temporal regimes. Comparison allows values for quantum efficiency and laser absorption, emission and ESA cross-sections to be allocated within the wide range of previously published data. Remaining discrepancies are attributed to thermal loading. An optimum pump energy is determined for a given fluence, and effective Cr:YAG energy scaling is demonstrated with only a slight threshold increase. Further enhancement is obtained using 500 ns pump pulses.
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Iain T. McKinnie, Jan C. Diettrich, Richard T. White, Donald M. Warrington, "Dynamics of gain-switched Cr:YAG lasers", Proc. SPIE 3265, Solid State Lasers VII, (27 May 1998); doi: 10.1117/12.308689; https://doi.org/10.1117/12.308689
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