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Proceedings Paper

Coherent superposition of propagation-invariant laser beams
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Paper Abstract

The coherent superposition of propagation-invariant laser beams represents an important beam-shaping technique, and results in new beam shapes which retain the unique property of propagation invariance. Propagation-invariant laser beam shapes depend on the order of the propagating beam, and include Hermite-Gaussian and Laguerre-Gaussian beams, as well as the recently introduced Ince-Gaussian beams which additionally depend on the beam ellipticity parameter. While the superposition of Hermite-Gaussian and Laguerre-Gaussian beams has been discussed in the past, the coherent superposition of Ince-Gaussian laser beams has not received significant attention in literature. In this paper, we present the formation of propagation-invariant laser beams based on the coherent superposition of Hermite-Gaussian, Laguerre-Gaussian, and Ince-Gaussian beams of different orders. We also show the resulting field distributions of the superimposed Ince-Gaussian laser beams as a function of the ellipticity parameter. By changing the beam ellipticity parameter, we compare the various shapes of the superimposed propagation-invariant laser beams transitioning from Laguerre-Gaussian beams at one ellipticity extreme to Hermite-Gaussian beams at the other extreme.

Paper Details

Date Published: 15 October 2012
PDF: 10 pages
Proc. SPIE 8490, Laser Beam Shaping XIII, 849007 (15 October 2012); doi: 10.1117/12.932233
Show Author Affiliations
R. Soskind, Rutgers, The State Univ. of New Jersey (United States)
M. Soskind, West Windsor-Plainsboro High School South (United States)
Y. G. Soskind, DHPC Technologies (United States)


Published in SPIE Proceedings Vol. 8490:
Laser Beam Shaping XIII
Andrew Forbes; Todd E. Lizotte, Editor(s)

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