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Proceedings Paper

Fundamental Mode Operation Of A Pulsed Nd:YAG Laser With A Variable Reflectivity Mirror
Author(s): Alain Chandonnet; Kevin J. Snell; Michel Piche; Nathalie McCarthy; Pierre Lavigne
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Paper Abstract

Optical beams of fundamental mode shape were obtained from a pulsed Nd:YAG laser using an output mirror with a parabolic reflectivity profile in an unstable Cassegrain resonator. When the laser is operated in the free-running regime, the near field is smooth and the far field has no significant secondary lobe. In the passive mode-locking regime, the beam quality is maintained; however, the beam waist is reduced compared to the free-running regime. This observation is attributed to the ability of a nonlinear element such as a saturable absorber to reshape a laser beam. Emission of pulse trains with a 96% reproducibility has been obtained with such a resonator.

Paper Details

Date Published: 24 March 1989
PDF: 8 pages
Proc. SPIE 1021, High Power Solid State Lasers, (24 March 1989); doi: 10.1117/12.950079
Show Author Affiliations
Alain Chandonnet, Universite Laval (Canada)
Kevin J. Snell, Universite Laval (Canada)
Michel Piche, Universite Laval (Canada)
Nathalie McCarthy, Universite Laval (Canada)
Pierre Lavigne, Institut National d'Optique (Canada)

Published in SPIE Proceedings Vol. 1021:
High Power Solid State Lasers
Horst Weber, Editor(s)

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