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Proceedings Paper

Fractional power in the bucket, beam quality and M2
Author(s): Santanu Basu; Lee M. Gutheinz
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Paper Abstract

This paper gives expressions to calculate the fraction of power, fPIB, from a given multimode gaussian laser beam that can be deposited within a bucket of radius, rT, on a target at a range, zT, using a focusing optic of diameter, Df. We relate the power in the bucket, fPIB, to the M2 parameter, both of which can be experimentally measured. In this paper, we have also presented relationships between these two parameters and BQ and Strehl, which have not been unambiguously defined for a multimode laser beam in the literature. We propose fPIB and M2 to be used as standard design parameters instead of BQ and Strehl for laser-target interaction tests with multimode laser beams from stable resonators.

Paper Details

Date Published: 3 March 2010
PDF: 12 pages
Proc. SPIE 7579, Laser Resonators and Beam Control XII, 75790U (3 March 2010); doi: 10.1117/12.846382
Show Author Affiliations
Santanu Basu, Sparkle Optics Corp. (United States)
Lee M. Gutheinz, Boeing-SVS, Inc. (United States)

Published in SPIE Proceedings Vol. 7579:
Laser Resonators and Beam Control XII
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko, Editor(s)

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