科研之友
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摘要
The second-harmonic generation in a three-dimensional subwavelength photonic circuit consisting of spherical semiconductors with large second-order nonlinear susceptibility has been investigated by using a multiple-scattering method. The second-harmonic fields along a single chain, around a corner, and split at forked structures have been demonstrated using the three-dimensional confinement effects of subwavelength light. Our results show that the second-harmonic generations can be realized in the three-dimensional subwavelength photonic circuit and provide an alternative route for the design of integrated three-dimensional nonlinear devices.
