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Proceedings Article

The effect of phase object imaging in focusing of spatially phase-modulated laser beams on a weakly absorbing extended medium

[+] Author Affiliations
E. L. Bubis

Institute of Applied Physics (Russian Federation)

Proc. SPIE 7994, LAT 2010: International Conference on Lasers, Applications, and Technologies, 79941I (February 08, 2011); doi:10.1117/12.887634
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From Conference Volume 7994

  • LAT 2010: International Conference on Lasers, Applications, and Technologies
  • Vladislav Panchenko; Gérard Mourou; Aleksei M. Zheltikov
  • Kazan, Russian Federation | August 23, 2010

abstract

All-adaptive imaging of phase objects in focusing of spatially phase-modulated laser beams in an extended weakly absorbing liquid or a gas medium is realized. The required level of the system operation corresponds to the initial stage of thermal self-action of the illuminating laser beam. Imaging occurring in an extended weakly absorbing medium in a definite power range is a new effect in propagation of spatially phase-modulated laser beams. Imaging of objects in such schemes takes place in focusing of a spatially phase-modulated beam of an appropriate power directly on a real weakly absorbing atmosphere or an aqueous medium. Due to adaptivity of this nonlinear process in contrast to linear systems, imaging occurs under the conditions of heat flows, which leads to wandering of the laser beam waist as a whole in the Fourier plane.

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Citation

E. L. Bubis
"The effect of phase object imaging in focusing of spatially phase-modulated laser beams on a weakly absorbing extended medium", Proc. SPIE 7994, LAT 2010: International Conference on Lasers, Applications, and Technologies, 79941I (February 08, 2011); doi:10.1117/12.887634; http://dx.doi.org/10.1117/12.887634


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