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Proceedings Paper

Transformation of a high-order mode-intensity distribution to a nearly Gaussian beam
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Paper Abstract

A simple method for obtaining a nearly Gaussian laser beam from a high order Hermite-Gaussian mode is presented. The method is based on separating the equal lobes of the high order mode and combining them together coherently. The method was experimentally verified with an arrangement of three mirrors, a 50% beam splitter and a phase tuning plate. The beam quality factor calculated in x-direction for the resulting output beam is 1.045, being very close to that of ideal Gaussian beam. The calculated power leakage is only 1.5%. The experimental near-field and far-field intensity distributions of the output beam have nearly Gaussian cross sections in both the x and y directions, with M2x=1.34 and M2y=1.32. With some modifications, it is possible to obtain an output beam with M2x=1.15 and no power leakage.

Paper Details

Date Published: 14 November 2003
PDF: 5 pages
Proc. SPIE 5147, ALT'02 International Conference on Advanced Laser Technologies, (14 November 2003); doi: 10.1117/12.537696
Show Author Affiliations
G. Machavariani, Weizmann Institute of Science (Israel)
Nir Davidson, Weizmann Institute of Science (Israel)
Amiel A. Ishaaya, Weizmann Institute of Science (Israel)
Asher A. Friesem, Weizmann Institute of Science (Israel)
Erez Hasman, Technion-Israel Institute of Technology (Israel)

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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