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Proceedings Paper

Probability density of intensity fluctuations for laser beams disturbed by turbulent aero-engine exhaust
Author(s): I. V. Ivanova; D. I. Dmitriev; V. S. Sirazetdinov
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Paper Abstract

In this paper we analyze some results of natural and numerical experiments on probability density of intensity fluctuations on an axis for 1,06 microns and 0,53 microns laser beams in comparison with theoretical dependences (lognormal, exponential and K-distribution). Beams were propagated in aviation engine exhaust at various angles between the jet and beam axes. It has been shown that for a beam with a wavelength of 0,53 microns experimental data can be approximated as exponential and K-distribution, while for radiation with a wavelength of 1,06 microns good conformity to K-distribution has been observed. Optimum conditions for image registration with CCD-cameras of laser beams distorted by turbulence have been chosen. For this purpose transfer characteristics of several same type samples of CCD-cameras have been studied at various irradiation modes and registration tunings. It has been shown that the dynamic range of the cameras is used to maximum capacity for image recording when gamma-correction is applied.

Paper Details

Date Published: 11 January 2007
PDF: 8 pages
Proc. SPIE 6594, Lasers for Measurements and Information Transfer 2006, 65940O (11 January 2007); doi: 10.1117/12.725610
Show Author Affiliations
I. V. Ivanova, Research Institute for Complex Testing of Opto-Electronic Devices (Russia)
D. I. Dmitriev, Research Institute for Complex Testing of Opto-Electronic Devices (Russia)
V. S. Sirazetdinov, Research Institute for Complex Testing of Opto-Electronic Devices (Russia)


Published in SPIE Proceedings Vol. 6594:
Lasers for Measurements and Information Transfer 2006

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