, Volume 22, Issue 1, pp 195-202
Date: 28 Nov 2011

Intensity clamping during laser filamentation by TW level femtosecond laser in air and argon

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A systematic research on intensity clamping phenomenon was conducted both in air and argon by using a TW level femtosecond laser. Though the laser peak power was increased from 0.1 up to 1.5 TW in the experiment, highly stabilized peak intensity inside the filament was observed in both gases. The peak intensities inside filaments were experimentally determined to be about 6.4 × 1013 W/cm2 (f = 20 cm) in air and 1.2, 1.3, and 1.7 × 1014 W/cm2 when different focal lenses (f = 100, 60, and 20 cm) were used in argon, respectively.

Original Text © Astro, Ltd., 2012.
The article is published in the original.