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The effect of long timescale gas dynamics on femtosecond filamentation

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Abstract

We show that a localized and long-lived quasi-stationary gas density depression exists after filament-generated-plasma recombination. Its millisecond timescale dynamics is governed by thermal diffusion and has strong effects on high-repetition-rate filamentation and supercontinuum generation.

© 2013 Optical Society of America

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