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Title: Plasma channels during filamentation of a femtosecond laser pulse with wavefront astigmatism in air

We have demonstrated experimentally and numerically the possibility of controlling parameters of plasma channels formed during filamentation of a femtosecond laser pulse by introducing astigmatism in the laser beam wavefront. It is found that weak astigmatism increases the length of the plasma channel in comparison with the case of aberration-free focusing and that strong astigmatism can cause splitting of the plasma channel into two channels located one after another on the filament axis. (interaction of laser radiation with matter. laser plasma)
Authors:
; ;  [1] ; ; ; ; ; ;  [2]
  1. Lomonosov Moscow State University, Faculty of Physics, Moscow (Russian Federation)
  2. P N Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
22373315
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 44; Journal Issue: 12; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AIR; BEAM OPTICS; CHROMATIC ABERRATIONS; LASER RADIATION; LASERS; PLASMA; PULSES