On the factors governing the minimum size of light beams during self-focusing |
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| Authors: | N V Vysotina A S Naumov N N Rozanov R L Sabirov V E Semenov V A Smirnov T V Starchikova S V Fedorov S A Chizhov V E Yashin |
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| Institution: | (1) Research Institute of Laser Physics, St. Petersburg, 199034, Russia |
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| Abstract: | The final stage of self-focusing of 500-ps pulses of a neodymium laser in silicate and phosphate glasses and in the nonlinear liquids perfluorooctane, benzene, and toluene is studied theoretically and experimentally. The formation of spatial solitons, which are stable due to the nonlinearity saturation, is demonstrated. It is found that the intensity of the nonlinearity saturation is close to that of the threshold breakdown for glasses and the role of stimulated Raman scattering is significant for liquids. |
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