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Proceedings Paper

Interference effects on the efficiency of an intracavity Raman-Nath mode locker in a TE CO2 laser
Author(s): Richard S. Eng; Victor H. Hasson; Yu-Lin Wang; Hsian Pei Chou; Eddie H. Young
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Paper Abstract

The axial separation distance between an intracavity resonant Raman-Nath acousto-optic modulator and the secondary mirror of an unstable resonator of a TE CO2 laser has strong effects on the mode-locking efficiency. Experimental measurements showed that the mode-locker laser pulse width was a periodic function of the separation distance with a period of about 18 mm. Preliminary simple analyses using a two-beam interference model yield a periodic sine-squared acousto-optic diffraction intensity distribution as a function of separation distance with the mode-locked pulse width varying as the inverse of sine to the fourth power of the diffraction intensity. The observed pulse width was in good agreement with the calculated value using the above interference theory.

Paper Details

Date Published: 12 May 1998
PDF: 11 pages
Proc. SPIE 3268, Gas and Chemical Lasers and Intense Beam Applications, (12 May 1998); doi: 10.1117/12.308077
Show Author Affiliations
Richard S. Eng, Textron Systems Div. (United States)
Victor H. Hasson, Textron Systems Div. (United States)
Yu-Lin Wang, Textron Systems Div. (United States)
Hsian Pei Chou, Textron Systems Div. (United States)
Eddie H. Young, NEOS Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 3268:
Gas and Chemical Lasers and Intense Beam Applications
Ernest A. Dorko; Jeffrey L. Moler, Editor(s)

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