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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 15 — Aug. 1, 2010
  • pp: 2550–2552

Femtosecond filamentation in air and higher-order nonlinearities

M. Kolesik, E. M. Wright, and J. V. Moloney  »View Author Affiliations


Optics Letters, Vol. 35, Issue 15, pp. 2550-2552 (2010)
http://dx.doi.org/10.1364/OL.35.002550


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Abstract

According to a recent experiment, the instantaneous electronic Kerr effect in air exhibits a strong intensity dependence, the nonlinear refractive index switching sign and crossing over from a self-focusing to a defocusing nonlinearity. A subsequent theoretical work has demonstrated that this has paradigm-changing consequences for the understanding of filamentation in air, so it is important to subject the idea of higher-order nonlinearities to stringent tests. Here we use numerical modeling to propose an experiment capable of discriminating between the standard and the new intensity-dependent Kerr-effect models.

© 2010 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: March 25, 2010
Revised Manuscript: June 17, 2010
Manuscript Accepted: June 22, 2010
Published: July 22, 2010

Citation
M. Kolesik, E. M. Wright, and J. V. Moloney, "Femtosecond filamentation in air and higher-order nonlinearities," Opt. Lett. 35, 2550-2552 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-15-2550

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