Filamentation-induced third-harmonic generation in air via plasma-enhanced third-order susceptibility

S. Suntsov, D. Abdollahpour, D. G. Papazoglou, and S. Tzortzakis

Phys. Rev. A 81, 033817 – Published 10 March 2010

Abstract

We study, both experimentally and theoretically, the underlying physics of third-harmonic generation in air by a filamented infrared femtosecond laser pulse propagating through a thin plasma channel. It is shown that the recently observed more than two-order-of-magnitude increase of the efficiency of third-harmonic generation occurs due to the plasma-enhanced third-order susceptibility. An estimate of the effective value of this susceptibility is given.

Received 13 August 2009

DOI:https://doi.org/10.1103/PhysRevA.81.033817

Authors & Affiliations

S. Suntsov^1,*, D. Abdollahpour¹, D. G. Papazoglou^1,2, and S. Tzortzakis^1,†

¹Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas, 71110, Heraklion, Greece
²Materials Science and Technology Department, University of Crete, 71003, Heraklion, Greece

^*ssuntsov@iesl.forth.gr
^†stzortz@iesl.forth.gr; http://unis.iesl.forth.gr

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Vol. 81, Iss. 3 — March 2010

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