Self-focusing of laser beam in dispersed medium

Oleg V. Angelsky; Vira R. Besaga; Andrew P. Maksimyak

doi:10.1117/12.2053868

17 December 2013 Self-focusing of laser beam in dispersed medium

Oleg V. Angelsky, Vira R. Besaga, Andrew P. Maksimyak

Author Affiliations +

Proceedings Volume 9066, Eleventh International Conference on Correlation Optics; 90661K (2013) https://doi.org/10.1117/12.2053868
Event: Eleventh International Conference on Correlation Optics, 2013, Chernivsti, Ukraine

Abstract

Water suspension of absorbing nano-sized particles is an example of a medium in which non-linear effects are present at moderate light intensities, which is applicable to optical treatment of biological objects. The experiment was dedicated to the phenomena emerging in a thin layer of such a medium under the action of inhomogeneous light field formed due to the Pearcey diffraction pattern near a microlens focus. In this high-gradient field, the light energy absorbed by the particles induces inhomogeneous distribution of the medium refraction index, which results in observable self-diffraction of the falling light, depending strongly on the medium position with respect to the focus.

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Oleg V. Angelsky, Vira R. Besaga, and Andrew P. Maksimyak "Self-focusing of laser beam in dispersed medium", Proc. SPIE 9066, Eleventh International Conference on Correlation Optics, 90661K (17 December 2013); https://doi.org/10.1117/12.2053868

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