Phys. Rev. A 81, 033817 (2010) [4 pages]Filamentation-induced third-harmonic generation in air via plasma-enhanced third-order susceptibilityReceived 13 August 2009; published 10 March 2010 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. © 2010 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.81.033817
DOI:
10.1103/PhysRevA.81.033817
PACS:
42.65.Ky, 42.65.Re, 52.38.Hb
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.