Self-Compression and Controllable Guidance of Multi-Millijoule Femtosecond Laser Pulses

Details Self-Compression and Controllable Guidance of Multi-Millijoule Femtosecond Laser Pulses Self-Compression and Controllable Guidance of Multi-Millijoule Femtosecond Laser Pulses

2007-09-20

arxiv.org/abs/0709.3187v1

Optics Communications, 281(20), 5249-5256, 2008

Physics

Optics

13 pages, 9 figures

Scientific paper

Self-compression of multi-millijoule femtosecond laser pulses and dramatic increase of the peak intensity are found in pressurized helium and neon within a range of intensity in which the ionization modification of the material parameters by the pulse is negligible. The pulse propagation is studied by the (3+1)-dimensional nonlinear Schroedinger equation including basic lowest order optical processes -- diffraction, group velocity dispersion of second order, and Kerr nonlinearity of third order. Smooth and well controllable pulse propagation dynamics is found. Constructing of compressed pulse of controllable parameters at given space target point can be achieved by a proper chose of the pulse energy and/or gas pressure.

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