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Optics Letters

Optics Letters

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  • Vol. 36, Iss. 7 — Apr. 1, 2011
  • pp: 1035–1037

Arrest of self-focusing collapse in femtosecond air filaments: higher order Kerr or plasma defocusing?

Olga Kosareva, Jean-Francois Daigle, Nikolay Panov, Tiejun Wang, Sima Hosseini, Shuai Yuan, Gilles Roy, Vladimir Makarov, and See Leang Chin  »View Author Affiliations


Optics Letters, Vol. 36, Issue 7, pp. 1035-1037 (2011)
http://dx.doi.org/10.1364/OL.36.001035


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Abstract

Experimentally measured conical emission rings on the blue side of the filament supercontinuum of a 800 nm 50 fs pulse in air are reproduced in simulations with plasma and the third-order Kerr as the nonlinear terms. This agreement indicates plasma as the dominant mechanism arresting the self-focusing collapse. The higher order Kerr terms with the recently measured coefficients stop the collapse at a lower intensity than the plasma does and lead to the spherical angle-wavelength spectrum without blueshifted rings.

© 2011 Optical Society of America

OCIS Codes
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

ToC Category:
Ultrafast Optics

History
Original Manuscript: November 29, 2010
Revised Manuscript: February 21, 2011
Manuscript Accepted: February 23, 2011
Published: March 16, 2011

Citation
Olga Kosareva, Jean-Francois Daigle, Nikolay Panov, Tiejun Wang, Sima Hosseini, Shuai Yuan, Gilles Roy, Vladimir Makarov, and See Leang Chin, "Arrest of self-focusing collapse in femtosecond air filaments: higher order Kerr or plasma defocusing?," Opt. Lett. 36, 1035-1037 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-7-1035

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