Pulse shortening due to filamentation in transparent mediumстатья
Статья опубликована в высокорейтинговом журнале
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Spatial contraction of high-peak-power femtosecond pulse in air leads to its simultaneous shortening in time domain. Numerical simulations in the slowly evolving wave approximation show that the full width at half maximum duration of the 45 fs 800 nm pulse becomes similar to 8 fs as soon as the intensity reaches the ionization threshold. At this propagation distance the compressed pulse accumulates maximum of its energy that is similar to 4% of the initial pulse energy. Higher than the second orders of material dispersion decrease the maximum possible energy achieved in the compressed pulse.