Regularities of nanosecond laser filamentation in the visible and near IR range of waverange (532 and 1562 nm) in a medium with strong optical nonlinearity

D. V. Apeksimov; P. A. Babushkin; A. A. Zemlyanov; Al. A. Zemlyanov; A. M. Kabanov; O. I. Kuchinskaya; G. G. Matvienko; A. V. Petrov; V. K. Oshlakov; O. A. Romanovsky; S. A. Sadovnikov; S. V. Yakovlev

doi:10.1117/12.2555278

11 December 2019 Regularities of nanosecond laser filamentation in the visible and near IR range of waverange (532 and 1562 nm) in a medium with strong optical nonlinearity

D. V. Apeksimov, P. A. Babushkin, A. A. Zemlyanov, Al. A. Zemlyanov, A. M. Kabanov, O. I. Kuchinskaya, G. G. Matvienko, A. V. Petrov, V. K. Oshlakov, O. A. Romanovsky, S. A. Sadovnikov, S. V. Yakovlev

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Proceedings Volume 11322, XIV International Conference on Pulsed Lasers and Laser Applications; 113220W (2019) https://doi.org/10.1117/12.2555278
Event: XIV International Conference on Pulsed Lasers and Laser Applications (AMPL-2019), 2019, Tomsk, Russian Federation

Abstract

The results of experimental studies of filamentation of focused laser pulses of nanosecond megawatt duration in a medium with strong cubic nonlinearity are presented. It was shown that multiple small-scale beam self-focusing is observed, the nonlinear focus is much closer to the source than the geometric one, and this distance increases with an increase in the pulse energy (power). Long tracks are observed that are uncharacteristic of linear spatial focusing.

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D. V. Apeksimov, P. A. Babushkin, A. A. Zemlyanov, Al. A. Zemlyanov, A. M. Kabanov, O. I. Kuchinskaya, G. G. Matvienko, A. V. Petrov, V. K. Oshlakov, O. A. Romanovsky, S. A. Sadovnikov, and S. V. Yakovlev "Regularities of nanosecond laser filamentation in the visible and near IR range of waverange (532 and 1562 nm) in a medium with strong optical nonlinearity", Proc. SPIE 11322, XIV International Conference on Pulsed Lasers and Laser Applications, 113220W (11 December 2019); https://doi.org/10.1117/12.2555278

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