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Proceedings Paper

Generation of super-Gaussian modes in Nd:YAG lasers with graded-phase mirrors
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Paper Abstract

To change the intensity distribution of the fundamental mode in a Nd:YAG laser resonator to a top-hat profile we developed and used a dielectric graded-phase mirror. A super-Gaussian mode of the sixth order was generated by means of a graded-phase mirror with a simple ring-shaped phase step on a spherical reflector. The depth of the ring was 90 nm. The graded-phase mirror was manufactured with an ordinary vapor deposition technique. An annular mask with a thickness of 10 μm was used to avoid the deposition of the LaF3 vapor at the position of the ring. Laser experiments with continuous-wave and repetitively pulsed dioed-laser pumping were performed and compared. The results are in excellent agreement with the theory.

Paper Details

Date Published: 14 November 2003
PDF: 8 pages
Proc. SPIE 5147, ALT'02 International Conference on Advanced Laser Technologies, (14 November 2003); doi: 10.1117/12.537456
Show Author Affiliations
Michael Gerber, Univ. of Bern (Switzerland)
Thomas Graf, Univ. of Bern (Switzerland)

Published in SPIE Proceedings Vol. 5147:
ALT'02 International Conference on Advanced Laser Technologies
Heinz P. Weber; Vitali I. Konov; Thomas Graf, Editor(s)

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