Dynamics of gain-switched Cr:YAG lasers

Iain T. McKinnie; Jan C. Diettrich; Richard T. White; Donald M. Warrington

doi:10.1117/12.308689

27 May 1998 Dynamics of gain-switched Cr:YAG lasers

Iain T. McKinnie, Jan C. Diettrich, Richard T. White, Donald M. Warrington

Proceedings Volume 3265, Solid State Lasers VII; (1998) https://doi.org/10.1117/12.308689
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

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.

Citation Download Citation

Iain T. McKinnie, Jan C. Diettrich, Richard T. White, and Donald M. Warrington "Dynamics of gain-switched Cr:YAG lasers", Proc. SPIE 3265, Solid State Lasers VII, (27 May 1998); https://doi.org/10.1117/12.308689

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