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arXiv · 1612.05376

Enhancement of UV Second-Harmonic Radiation at Nonlinear Interfaces with Discontinuous Second-order Susceptibilities

Xiaohui Zhao·Yuanlin Zheng·Huaijin Ren·Ning An·Xuewei Deng·Xianfeng Chen
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Abstract

We investigate the generation of ultraviolet (UV) second-harmonic radiation on the boundary of a UV transparent crystal, which is derived from the automatic partial phase matching of the incident wave and the total internal reflection. By adhering to another UV non-transparency crystal with larger second-order nonlinear coefficient \chi^{(2)}, an nonlinear interface with large disparity in \chi^{(2)} is formed and the enhancement of UV second-harmonic radiation is observed experimentally. The intensity of enhanced second harmonic wave generated at the nonlinear interface was up to 11.6 times at the crystal boundary. As a tunable phase-matching method, it may suggest potential applications in the UV, even vacuum-UV, spectral region.

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Xiaohui Zhao, Yuanlin Zheng, Huaijin Ren, Ning An, Xuewei Deng, Xianfeng Chen. 2016-12-16. Enhancement of UV Second-Harmonic Radiation at Nonlinear Interfaces with Discontinuous Second-order Susceptibilities. https://arxiv.org/abs/1612.05376

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