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Proceedings Paper

Cr-ZnSe passively Q-switched fiber-bulk Ho:YAG hybrid laser
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Paper Abstract

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.

Paper Details

Date Published: 17 February 2010
PDF: 8 pages
Proc. SPIE 7578, Solid State Lasers XIX: Technology and Devices, 75781J (17 February 2010); doi: 10.1117/12.842597
Show Author Affiliations
Yuri Terekhov, The Univ. of Alabama at Birmingham (United States)
Igor S. Moskalev, The Univ. of Alabama at Birmingham (United States)
Dmitri V. Martyshkin, The Univ. of Alabama at Birmingham (United States)
Vladimir V. Fedorov, The Univ. of Alabama at Birmingham (United States)
Sergey B. Mirov, The Univ. of Alabama at Birmingham (United States)
Photonics Innovations, Inc. (United States)


Published in SPIE Proceedings Vol. 7578:
Solid State Lasers XIX: Technology and Devices
W. Andrew Clarkson; Norman Hodgson; Ramesh K. Shori, Editor(s)

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