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Proceedings Paper

Q-switching with photo-elastic modulators
Author(s): F. Bammer
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Paper Abstract

We describe a new method for Q-switching. It uses a polarizer together with a photo-elastic modulator, i.e. a transmissive optical element, which oscillates in a longitudinal eigenmode. This induces due to the photo-elastic effect a modulated artificial birefringence which modulates the polarization of passing light and hence the transmission through the polarizer. With a proper choice of eigenmodes and corresponding phases and amplitudes the times of high transmission are short enough to act as a Q-switch in a laser cavity. The voltage amplitude of the excitation is in the order of 10 V. Hence a simple and robust pulsed laser with constant pulse repetition frequency can be built.

Paper Details

Date Published: 26 April 2007
PDF: 5 pages
Proc. SPIE 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 634611 (26 April 2007); doi: 10.1117/12.738120
Show Author Affiliations
F. Bammer, Vienna Univ. of Technology (Austria)


Published in SPIE Proceedings Vol. 6346:
XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers

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