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Proceedings Paper

Distortions of laser beams by turbulent aero-engine jet: experiment and numerical modeling
Author(s): Nina F. Borisova; Inga V. Ivanova; Vladimir S. Sirazetdinov
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Paper Abstract

The experimental studies of spatial characteristics for laser beams disturbed by a turbulent aero-engine jet were carried out. The angular divergence, random wanderings of the beam's centroid and statistical characteristics of stochaistic intensity distribution in cross-section of laser beams with radiation wavelengths of 1.06 and 0.53 microns were determined for different angles of the beam-jet intersection. On the basis of Monte-Carlo method a numerical mathematical model for lasre beam propagation through a turbulent jet of aero-engine has been designed. The model describes experimentally detected features beyond the framework of the standard model of a turbulent layer: strong dependence from radiation wabelength and spatial anisotropy of the distorted beam's statistical characteristics. A numerical simulation experiment, verification and adjustment of the designed beam propagation model for a following comparison of results obtained from full-scale and simulation experiments were carried out. With allowance for inevitable errors of measurements and calculations, there is a good agreement between almost all statistical characteristics of disturbed laser beams obtained in different configurations during full-scale and imitative experiments.

Paper Details

Date Published: 19 February 2004
PDF: 12 pages
Proc. SPIE 5381, Lasers for Measurements and Information Transfer 2003, (19 February 2004); doi: 10.1117/12.547645
Show Author Affiliations
Nina F. Borisova, Research Institute for Complex Testing of Optoelectronic Devices (Russia)
Inga V. Ivanova, Research Institute for Complex Testing of Optoelectronic Devices (Russia)
Vladimir S. Sirazetdinov, Research Institute for Complex Testing of Optoelectronic Devices (Russia)

Published in SPIE Proceedings Vol. 5381:
Lasers for Measurements and Information Transfer 2003
Vadim E. Privalov, Editor(s)

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