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

G. Machavariani; Nir Davidson; Amiel A. Ishaaya; Asher A. Friesem; Erez Hasman

doi:10.1117/12.537696

14 November 2003 Transformation of a high-order mode-intensity distribution to a nearly Gaussian beam

G. Machavariani, Nir Davidson, Amiel A. Ishaaya, Asher A. Friesem, Erez Hasman

Proceedings Volume 5147, ALT'02 International Conference on Advanced Laser Technologies; (2003) https://doi.org/10.1117/12.537696
Event: ALT'02 International Conference on Advanced laser Technologies, 2002, Adelboden, Switzerland

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 M²_x=1.34 and M²_y=1.32. With some modifications, it is possible to obtain an output beam with M²_x=1.15 and no power leakage.

Citation Download Citation

G. Machavariani, Nir Davidson, Amiel A. Ishaaya, Asher A. Friesem, and Erez Hasman "Transformation of a high-order mode-intensity distribution to a nearly Gaussian beam", Proc. SPIE 5147, ALT'02 International Conference on Advanced Laser Technologies, (14 November 2003); https://doi.org/10.1117/12.537696

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