Nonlinear phase shift resulting from two-color multistep cascading
JOSA B, Vol. 17, Issue 6, pp. 959-965 (2000)
http://dx.doi.org/10.1364/JOSAB.17.000959
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Abstract
We propose a novel type of cascading parametric interaction for generating a nonlinear phase shift in dielectric media with a quadratic nonlinear response based on two-frequency wave mixing of the fundamental and second-harmonic waves. Self-phase modulation of the fundamental wave results from a cascading process consisting of four second-order subprocesses, the direct and reverse subprocesses of Type I second-harmonic generation (SHG) and the direct and reverse subprocesses of Type II SHG. It is found analytically and numerically that the fundamental wave passing through a quadratic medium, tuned for simultaneous near phase matching for these two processes, collects 60% more nonlinear phase shift than does the corresponding two-step cascading. We also obtain the conditions for stationary waves (nonlinear modes) supported by such multistep cascading processes.
© 2000 Optical Society of America
OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.5940) Nonlinear optics : Self-action effects
(200.4740) Optics in computing : Optical processing
Citation
Solomon Saltiel, Kaloian Koynov, Yana Deyanova, and Yuri S. Kivshar, "Nonlinear phase shift resulting from two-color multistep cascading," J. Opt. Soc. Am. B 17, 959-965 (2000)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-17-6-959
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