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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 36, Iss. 12 — Jun. 15, 2011
  • pp: 2239–2241

Effect of multiphoton absorption and free carriers in slow-light photonic crystal waveguides

Chad Husko, Pierre Colman, Sylvain Combrié, Alfredo De Rossi, and Chee Wei Wong  »View Author Affiliations


Optics Letters, Vol. 36, Issue 12, pp. 2239-2241 (2011)
http://dx.doi.org/10.1364/OL.36.002239


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Abstract

We examine the effects of multiphoton absorption, free carriers, and disorder-induced linear scattering in slow-light photonic crystal waveguides. We derive an analytic formulation for self-phase modulation including the group velocity scaling of the nonlinear phase shift in materials limited by three-photon absorption as a representative nonlinear process. We investigate the role of free carriers and derive an approximate critical intensity at which these effects begin to strongly modify the optical field. This critical intensity is employed to determine an optimal group index for the self-phase modulation in the slow-light devices. These observations are confirmed with numerical modeling.

© 2011 Optical Society of America

OCIS Codes
(130.5990) Integrated optics : Semiconductors
(190.3270) Nonlinear optics : Kerr effect
(190.4180) Nonlinear optics : Multiphoton processes
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(160.5298) Materials : Photonic crystals

ToC Category:
Nonlinear Optics

History
Original Manuscript: February 7, 2011
Revised Manuscript: April 22, 2011
Manuscript Accepted: May 11, 2011
Published: June 7, 2011

Citation
Chad Husko, Pierre Colman, Sylvain Combrié, Alfredo De Rossi, and Chee Wei Wong, "Effect of multiphoton absorption and free carriers in slow-light photonic crystal waveguides," Opt. Lett. 36, 2239-2241 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-12-2239


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