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28 February 2006 Comparative performance of passively Q-switched diode-pumped Yb:GGG, Yb:YAG, and Yb-doped tungstates lasers using Cr4+ -doped garnets
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Abstract
We investigated the CW free-running and repetitive modulation in the kHz frequency domain of a passively Q-switched, diode-pumped Yb:YAG, Yb:GGG and Yb:KYW lasers, by using Cr4+:YAG as a saturable absorber. The results presented here are focused towards the design of a passively Q-switched Yb doped garnets or Yb doped tungstates microlaser. The free-running performance of Yb:YAG, Yb:GGG, Yb:KGW and Yb:KYW were characterized, and experimental parameters such as gain and loss were evaluated. We carried out a fit between our experimental results and an existing numerical model, which relates the experimental and the physical parameters of the ytterbium diode-pumped system to the minimal threshold pumping power. The best performance among the laser crystals was obtained for Yb:YAG laser. A maximum peak power of ≈4.5-kW, at an average output power of 1.32-W, were extracted with of ≈25 % extraction efficiency.
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Y. Kalisky, O. Kalisky, U. Rachum, G. Boulon, and A. Brenier "Comparative performance of passively Q-switched diode-pumped Yb:GGG, Yb:YAG, and Yb-doped tungstates lasers using Cr4+ -doped garnets", Proc. SPIE 6100, Solid State Lasers XV: Technology and Devices, 61001K (28 February 2006); https://doi.org/10.1117/12.643882
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