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Proceedings Paper

Effects of spherical aberration on laser beam quality
Author(s): Anthony E. Siegman; Joseph Ruff
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Paper Abstract

We present simple formulas for the degradation in beam quality factor M2 of a laser beam caused by quartic phase aberrations, such as may occur in spherically aberrated optical components, thermally aberrated rods or windows, or divergent beams passing through planar dielectric interfaces, as in unstable-resonator diode lasers. The beam quality degradation in all cases is found to be small for beams smaller than a certain critical spot size wq, but degrades as M2 approximately equals (w/wq)4 for beam sizes greater than wq. Experimental results confirming the beam quality degradation from an uncorrected plano- convex lens are also given.

Paper Details

Date Published: 22 April 1993
PDF: 10 pages
Proc. SPIE 1834, Laser Energy Distribution Profiles: Measurement and Applications, (22 April 1993); doi: 10.1117/12.143847
Show Author Affiliations
Anthony E. Siegman, Stanford Univ. (United States)
Joseph Ruff, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 1834:
Laser Energy Distribution Profiles: Measurement and Applications
James M. Darchuk, Editor(s)

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