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Proceedings Paper

Comparison of laser beams quality criteria
Author(s): Eugeny Perevezentsev; Anatoly Poteomkin; Efim Khazanov
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Paper Abstract

Nowadays the power of lasers with diffraction beam quality is on significant rise. But it is not easy to achieve ideal quality because of severe undesired distortions. Under different forms of distortion the beam shows different behavior. With any form of distortions there is the need to qualitatively characterize the beam quality. Three various qualitative criteria are most commonly used for this purpose, each of them describing the beam with one ratio: overlapping integral, Strehl ratio, and M2 parameter. All these criteria are well-known and frequently used in the literature, though the problem of their interrelation has never been discussed. In this paper we have analyzed the above mentioned criteria and have researched their interrelations in three most common types of beam quality degradation: thermal lens, electronic self-focusing, and spherical aberration. Approximate analytical expressions for all three criteria and three types of beam distortion are derived for Gaussian and super-Gaussian intensity shapes. The efficiency of characterizing those beams by various criteria is discussed.

Paper Details

Date Published: 23 February 2006
PDF: 11 pages
Proc. SPIE 6101, Laser Beam Control and Applications, 610119 (23 February 2006); doi: 10.1117/12.644632
Show Author Affiliations
Eugeny Perevezentsev, Institute of Applied Physics (Russia)
Anatoly Poteomkin, Institute of Applied Physics (Russia)
Efim Khazanov, Institute of Applied Physics (Russia)

Published in SPIE Proceedings Vol. 6101:
Laser Beam Control and Applications
Steven J. Davis; Alexis V. Kudryashov; Adolf Giesen; Detlef Nickel; Michael C. Heaven; Alan H. Paxton; Vladimir S. Ilchenko; J. Thomas Schriempf, Editor(s)

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