Plasma channels in a filament of a femtosecond laser pulse focused by an axiconстатья
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Дата последнего поиска статьи во внешних источниках: 10 ноября 2014 г.
Аннотация:We report the results of experimental and numerical
investigation of the influence of the wavefront curvature of femtosecond
light focused by an axicon on the length and position of
plasma channels in the filament under conditions of normal and
anomalous group velocity dispersion in fused silica. It is shown that
a change in the wavefront curvature by a value much greater than
the longitudinal dimensions of the filament noticeably changes the
geometry of the plasma channel position. The role of axicon focusing
for ordering multiple filamentation is studied experimentally.