Superfilamentation with regularized femtosecond laser beamтезисы доклада Тезисы

Дата последнего поиска статьи во внешних источниках: 24 марта 2017 г.

Работа с тезисами доклада


[1] Superfilamentation with regularized femtosecond laser beam / P. Dmitry, U. Darya, S. Danila et al. // XVIII FANS & III ANP. — Publishing House of SPbPU, 2016. — P. 39–39. 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.

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