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Phys. Rev. A 63, 053807 (2001) [9 pages]

Multiphoton processes in the presence of self-phase-modulation

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Oscar G. Calderón* and Alan H. Chin
W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, California 94305

Junichiro Kono
Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005

Received 24 August 2000; published 13 April 2001

We have theoretically investigated the effects of self-phase-modulation on multiphoton nonlinear optical processes in semiconductors, utilizing multiple-order perturbation theory based on a set of coupled nonlinear-wave equations. Our results clearly demonstrate that the self-phase-modulation in the fundamental field induces spectral broadening in the harmonic fields (cross-phase modulation) and alleviates phase mismatch by providing a distribution of wave vectors. These results are consistent with our recent observation of extreme nonlinear optical behavior in bulk semiconductors under intense mid-infrared radiation.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.63.053807
DOI:
10.1103/PhysRevA.63.053807
PACS:
42.65.Ky, 42.65.Re, 42.70.Nq, 42.65.Hw

*Permanent address: Departamento Optica, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain.

Present address: Information Science & Technology Division, Lawrence Livermore National Laboratory, Livermore, CA 94551.