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Proceedings Paper

PLZT Electro-optic Q-switch for Er:Cr:YSGG laser
Author(s): Maris Ozolinsh; Hans Joachim Eichler; Baining Liu; Qi Zhu
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Paper Abstract

Q-switching of the Er:Cr:YSGG laser at 2.79 micrometers is realized using electrooptic modulators of PLZT X/65/35 ceramics. The high (but slow as compared with single crystals) electrooptical effect in PLZT allowed to construct Q-switches with an aperture larger than 4 X 4 mm2, small lengths of 3 - 6 mm, with a control voltage of 1000 - 1500 V. Q-switching is realized using modulators in two modes--as a (lambda) /2 switch placed into the laser cavity at the Brewster angle avoiding reflection losses and as a (lambda) /4 switch with higher single pass losses due to Fresnel reflections. A higher laser output was obtained using (lambda) /2 switching. The obtained pulses had a halfwidth of 150 ns, a pulse build-up time of 1.8 - 2.5 microsecond(s) , a single pulse energy of 10 - 12 mJ as compared with 30 mJ output of the laser for the free-running mode.

Paper Details

Date Published: 17 September 1999
PDF: 5 pages
Proc. SPIE 3863, 1999 International Conference on Biomedical Optics, (17 September 1999); doi: 10.1117/12.364363
Show Author Affiliations
Maris Ozolinsh, Univ. of Latvia (Latvia)
Hans Joachim Eichler, Technische Univ. Berlin (Germany)
Baining Liu, Technische Univ. Berlin (Germany)
Qi Zhu, Technische Univ. Berlin (Germany)


Published in SPIE Proceedings Vol. 3863:
1999 International Conference on Biomedical Optics
Qingming Luo; Britton Chance; Lihong V. Wang; Steven L. Jacques, Editor(s)

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