Single-focusing regime of propagation of femtosecond light packets when self-focused in a condensed medium
- Moscow State University, Faculty of Physics and International Laser Center (Russian Federation)
Numerical simulations are used to investigate the propagation of tightly focused megawatt femtosecond light packets in a nonlinear condensed medium in the single-focusing regime. A plasma is shown to be generated in a small region whose length and diameter increase with power in the single-focusing regime of propagation of a femtosecond light packet in a transparent dielectric. The limiting electron density in the microplasma formation region is virtually independent of the laser pulse power but increases with numerical aperture of the focusing optics. At a fixed femtosecond pulse power exceeding the critical self-focusing power, the transmission of light by a dielectric layer decreases with increasing numerical aperture of the focusing optics.
- OSTI ID:
- 21246956
- Journal Information:
- Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 2 Vol. 108; ISSN JTPHES; ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
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