Light bullet dynamics in uniform dielectricsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 8 сентября 2020 г.
Аннотация:Experiments and numerical simulations performed
jointly by the Institute of Spectroscopy, Russian Academy of
Sciences, and Lomonosov Moscow State University have shown
that unlike solitons in guiding structures, the light bullet, a wave
packet compressed to the extreme in space and time in the bulk
of a transparent dielectric, is a short-lived formation whose free
path is no more than several hundred micrometers. The super-
continuum spectrum generated by a light bullet experiences
superbroadening, and an isolated anti-Stokes wing emerges if
the bullet is compressed to the state of a wave packet close to the
single-cycle one, and a plasma channel develops. These findings
have been confirmed by numerical simulations and experiments
demonstrating periodic density modulation of the color centers
induced in LiF, which occurs due to the difference between the
wave packet envelope and frequency-carrier velocities in a
medium.