Vol. 12, issue 05, article # 6

Zemlyanov A. A., Geints Yu. E., Pal'chikov A. V. Stimulated scattering of light in transparent particles. Influence of ponderomotive surface deformations. // Atmospheric and oceanic optics. 1999. V. 12. No. 05. P. 398-405. PDF
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We discuss here some peculiarities in the evolution of stimulated scattering in transparent liquid particles under the action of ponderomotive force induced by the light field. Strong deformations within the so-called Descartes ring are noticed that exceed deformations on the rest surface of a particle by an order of magnitude. The evolution dynamics of droplet deformations suggests that just these deformations are the main cause of the experimentally observed break of stimulated scattering. An analytical expression has been derived for the Q-factor of resonance eigenmodes caused by slight deviations of a droplet shape from a sphere. It is shown that a higher Q-factor experiences a stronger influence of the surface deformations.