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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 10 — May. 15, 2012
  • pp: 1604–1606

On the relative roles of higher-order nonlinearity and ionization in ultrafast light-matter interactions

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


Optics Letters, Vol. 37, Issue 10, pp. 1604-1606 (2012)
http://dx.doi.org/10.1364/OL.37.001604


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Abstract

Far off-resonant ultrafast and nonlinear light-matter interactions are studied using a one-dimensional atomic model. Results from a pump-probe diagnostic reveal that any higher-order nonlinear refraction is masked by ionization-induced defocusing before it becomes significant. On the other hand, we show that signatures of a higher-order nonlinearity may still be manifest via low-order harmonics of the pump center frequency. Implications for filamentation of femtosecond pulses are pointed out.

© 2012 Optical Society of America

OCIS Codes
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(190.5940) Nonlinear optics : Self-action effects
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.5550) Ultrafast optics : Pulses

ToC Category:
Ultrafast Optics

History
Original Manuscript: January 11, 2012
Revised Manuscript: March 7, 2012
Manuscript Accepted: March 9, 2012
Published: May 7, 2012

Citation
J. M. Brown, E. M. Wright, J. V. Moloney, and M. Kolesik, "On the relative roles of higher-order nonlinearity and ionization in ultrafast light-matter interactions," Opt. Lett. 37, 1604-1606 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-10-1604

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