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Proceedings Paper

Fe:ZnSe passive Q-switching of 2.8-µm Er:Cr:YSGG laser cavity
Author(s): Andrew Gallian; Alan Martinez; Patrick Marine; Vladimir Fedorov; Sergey Mirov; Valeri Badikov; Dmitri Boutoussov; Manvel Andriasyan
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Paper Abstract

The use of Fe:ZnSe polycrystals as passive Q-switches for the Er:Cr:YSGG laser operating at 2.8&mgr;m is introduced. Fe:ZnSe samples with 1-7cm-1 coefficients of absorption were prepared using thermal diffusion of iron in CVD grown polycrystalline ZnSe. A flashlamp pumped Er:Cr:YSGG laser with a variable (40 - 80% reflectivity) output coupler (OC) was used as a test bed for passive Q-switching. Using a 90% initial transmission Fe:ZnSe placed at the Brewster angle we obtained a single giant pulse lasing with a pulse duration of ~65 ns and a maximum output of 13 mJ under 30 J of flashlamp pump. Multi-pulse (19 pulses) output was obtained with 85 mJ total output energy at a pump energy of 30 J. The saturation curve of Fe:ZnSe was measured. Fitting this data with a theoretical model results in absorption crosssection of 0.56 × 10-18 cm2, which is close to the value of the absorption cross-section obtained from spectroscopic measurements (0.85 × 10-18 cm2 at 2.8 &mgr;m).

Paper Details

Date Published: 9 March 2007
PDF: 9 pages
Proc. SPIE 6451, Solid State Lasers XVI: Technology and Devices, 64510L (9 March 2007); doi: 10.1117/12.701289
Show Author Affiliations
Andrew Gallian, Univ. of Alabama at Birmingham (United States)
Alan Martinez, Univ. of Alabama at Birmingham (United States)
Patrick Marine, Univ. of Alabama at Birmingham (United States)
Vladimir Fedorov, Univ. of Alabama at Birmingham (United States)
Sergey Mirov, Univ. of Alabama at Birmingham (United States)
Valeri Badikov, Kuban State Univ. (Russia)
Dmitri Boutoussov, BIOLASE Technology, Inc. (United States)
Manvel Andriasyan, BIOLASE Technology, Inc. (United States)

Published in SPIE Proceedings Vol. 6451:
Solid State Lasers XVI: Technology and Devices
Hanna J. Hoffman; Ramesh K. Shori; Norman Hodgson, Editor(s)

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