Sub-half-bandgap nonlinear refraction is considered for semiconductor superlattice waveguides, previously designed for quasi-phase-matched frequency conversion. A highly anisotropic dependence is obtained. Intermixing allows selective area definition of the nonlinear response.
© 2004 Optical Society of America
D. C. Hutchings, "Semiconductor superlattice waveguides: A universal testbed for nonlinear guided waves," in Nonlinear Guided Waves and Their Applications, Technical Digest on CD (Optical Society of America, 2004), paper TuA7.
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