Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 80, Issue 2, Pages 267-275Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00340-004-1677-1
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We propose a new method for controlling randomly generated multiple filaments during the propagation of femtosecond laser pulses in optical media. The method is based on introducing a periodic amplitude modulation of the transverse beam profile. It is shown both experimentally and numerically that the introduction of a periodic mesh into a propagation path of a femtosecond near-infrared laser pulse leads to a deterministic spatial distribution of multiple filaments in the presence of initial random fluctuations. As a result, the number of filaments is increased as compared to the random case.
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