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29 June 1994 Laser beam self-focusing on scatterers due to Kerr nonlinearity of air
Valerii V. Vorob'ev
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Proceedings Volume 2222, Atmospheric Propagation and Remote Sensing III; (1994) https://doi.org/10.1117/12.178026
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States
Abstract
For description of adaptive systems for atmospheric distortions compensation a common assumption is that intensity of radiation is scattered from the target, small enough to affect the propagation of an incident wave. In this paper the mutual effects of the incident and backscattered radiation is considered. This consideration is made for that case when the target is a small mirror. Solutions of the equations of paraxial optics exist in a form of beams which collapse on scatterers for beam power P>=P(Omicron )3, where P(Omicron ) is threshold power the beam collapse in absence of a scatterer dimension tends to zero. The problem of physical realization of the self-focusing on the scatterer is discussed. By means of numerical simulation it is shown that for monotonously increasing beam power P the back scattering leads to self-focusing on small scatterers only if P>=P(Omicron ).
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Valerii V. Vorob'ev "Laser beam self-focusing on scatterers due to Kerr nonlinearity of air", Proc. SPIE 2222, Atmospheric Propagation and Remote Sensing III, (29 June 1994); https://doi.org/10.1117/12.178026
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KEYWORDS
Atmospheric propagation
Laser scattering
Mirrors
Numerical simulations
Scattering
Wave propagation
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