17 February 2010 Cr-ZnSe passively Q-switched fiber-bulk Ho:YAG hybrid laser
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The objective of this work was to develop a compact and efficient Tm-fiber-Ho:YAG, hybrid laser passively Q-switched by Cr:ZnSe saturable absorber. We used a folded semi-hemispherical 10 cm long cavity with a plane output coupler and a 0.5 m concave high reflector. In these experiments we studied the performance of two high optical quality Cr:ZnSe crystals as saturable absorbers with initial transmissions of 93.9% and 70% at 2.1 μm. With the 93.9% transmission crystal, passive Q-switching was realized with a maximum output power of 5 W, pulse energy of 0.5 mJ, pulse duration of 150 ns, and Q-switched-to-CW-mode extraction efficiency of 60%. With the 70% transmission crystal, passive Qswitching was achieved with a 75% Q-switched-to-CW-mode extraction efficiency, pulse energy of 3 mJ, and duration of 7ns. The laser demonstrated sustained damage-free, TEM000 operation with 0.5 MW of peak power showing promise for applications requiring high-peak-power, diffraction-limited beams, and single-frequency regimes of operation.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yuri Terekhov, Yuri Terekhov, Igor S. Moskalev, Igor S. Moskalev, Dmitri V. Martyshkin, Dmitri V. Martyshkin, Vladimir V. Fedorov, Vladimir V. Fedorov, Sergey B. Mirov, Sergey B. Mirov, } "Cr-ZnSe passively Q-switched fiber-bulk Ho:YAG hybrid laser", Proc. SPIE 7578, Solid State Lasers XIX: Technology and Devices, 75781J (17 February 2010); doi: 10.1117/12.842597; https://doi.org/10.1117/12.842597


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