Filamentation of femtosecond laser pulses in nonlinear transparent media

Abstract : Propagation of electromagnetic pulses is of fundamental importance in pure and applied science, and the recent development of sources of intense ultra-short laser pulses has added many interesting twists to this long standing problem. The broad spectral bandwidths, high peak powers, and (3+1)-dimensional nature of these fields give rise to complex linear and nonlinear effects that have posed significant challenges to researchers. In the last years an important effort has been devoted to the study of the propagation of powerful laser beams in atmosphere as well as in other transparent media, i.e. glasses. A particular interest has focused on femtosecond laser systems, able to deliver very high peak powers with a modest energy output. Due to the high power the nonlinear response of the medium plays a key role in the propagation. A very unusual and spectacular propagation of light has been observed recently. Intense ultrashort laser pulses launched in air self-organize into filaments, which persist over very long distances.
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https://hal-ensta-paris.archives-ouvertes.fr//tel-01188205
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Submitted on : Friday, August 28, 2015 - 3:58:53 PM
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  • HAL Id : tel-01188205, version 1

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Stelios Tzortzakis. Filamentation of femtosecond laser pulses in nonlinear transparent media. Optics [physics.optics]. Ecole Polytechnique, 2001. English. ⟨tel-01188205⟩

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