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Proceedings Paper

Astigmatic twisted beams: reducing the peak intensity in high-power waveguides
Author(s): Vladimir L. Derbov; Aleksey I. Bychenkov
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Paper Abstract

We show that under the condition of local field limitation the total power transported through a waveguide can be substantially increased using twisted astigmatic generalized Gaussian beams. Numerical modeling of such beams in a parabolic waveguide with Kerr nonlinearity is carried out basing on the modified generalized moments method. The conditions are found that provide the optimal propagation regime in which the fixed-size beam spot rotates uniformly around the beam axis. It is shown that in this regime the peak intensity of the beam may be sufficiently lower than in stable axially-symmetric beams of the same total power.

Paper Details

Date Published: 20 March 2000
PDF: 5 pages
Proc. SPIE 4002, Saratov Fall Meeting '99: Laser Physics and Spectroscopy, (20 March 2000); doi: 10.1117/12.380100
Show Author Affiliations
Vladimir L. Derbov, Saratov State Univ. (Russia)
Aleksey I. Bychenkov, Saratov State Univ. (Russia)


Published in SPIE Proceedings Vol. 4002:
Saratov Fall Meeting '99: Laser Physics and Spectroscopy
Vladimir L. Derbov; Leonid A. Melnikov; Vladimir P. Ryabukho, Editor(s)

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