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Superfilamentation with regularized femtosecond laser beamтезисы доклада Тезисы
- Авторы: Dmitry Pushkarev, Darya Uryupina, Danila Shipilo, Nikolai Panov, Anton Bychkov, Alexei Lar’kin, Ekaterina Mitina, Alexander Ushakov, Sergei Degtyarev, Svetlana Khonina, Alexander Shkurinov, Alexander Karabutov, Ihar Babushkin, Ayhan Demircan, Uwe Morgner, Olga Kosareva, Andrei Savel’ev
- Сборник: XVIII FANS & III ANP
- Тезисы
- Год издания: 2016
- Место издания: Publishing House of SPbPU
- Первая страница: 39
- Последняя страница: 39
- Аннотация: Superfilament formation in air by 0.5 TW femtosecond IR pulse was studied. Control of the initial transverse distribution of electromagnetic field was achieved by placing amplitude or phase (so-called diffractive optical element) masks before the loosely focusing lens. Angularly resolved spectra of the radiation inside a filament as well as wideband acoustic signals were detected starting from the focusing lens to the filament termination point. We presented a comparative study for (i) a single filament, (ii) stochastic superfilamentation, (iii) amplitude or (iv) phase controlled superfilamentation. In simulations we apply the Forward Maxwell equation with a carrier wave resolved. Our model includes the diffraction, dispersion, Kerr nonlinearity, self-consistent ionization and transient photocurrent of free electrons. Such the model can describe adequately the spectral transformation and energy absorption.
- Добавил в систему: Савельев-Трофимов Андрей Борисович