Розсіювання Гінзбурга–Франка та Черенковського типів за самофокусування наносекундних лазерних імпульсів у рідинах
We study the dynamics of nonlinear optical processes such as self-focusing, self-phase modulation, and stimulated Raman scattering in Kerr-liquids under the nanosecond laser pulse excitation. The results prove the existence of the transition Ginzburg–Frank-type effect, which promotes the appearance...
Збережено в:
Дата: | 2018 |
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Автор: | |
Формат: | Стаття |
Мова: | English |
Опубліковано: |
Publishing house "Academperiodika"
2018
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Теми: | |
Онлайн доступ: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018026 |
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Назва журналу: | Ukrainian Journal of Physics |
Репозитарії
Ukrainian Journal of PhysicsРезюме: | We study the dynamics of nonlinear optical processes such as self-focusing, self-phase modulation, and stimulated Raman scattering in Kerr-liquids under the nanosecond laser pulse excitation. The results prove the existence of the transition Ginzburg–Frank-type effect, which promotes the appearance of new spectral components of the laser radiation at the medium boundary. The generation of extended anti-Stokes frequency-angular bands of stimulated Raman scattering is explained. When the velocity of a self-focusing focal spot matches the phase velocity of the non-linear polarization at the anti-Stokes Raman frequency and the phase velocity of the scattered axial radiation, the most intense frequency-angular bands appear. They are described by the equations typical of the Cherenkov radiation. |
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