Enhanced second-harmonic generation for multiple wavelengths by defect modes in one-dimensional photonic crystals.

Abstract

We present an effective design of aperiodically stacked layers of nonlinear material and air, sandwiched by two truncated photonic crystals, in terms of the simulation annealing method. The constructed structure can achieve multiple-wavelength second-harmonic generation (SHG) at the preassigned wavelengths. We derive a general solution of SHG in 1D… (More)

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