Controllable polarization coupled dual-focused second-harmonic generations in a two-dimensional optical superlattice.

@article{Hong2013ControllablePC,
  title={Controllable polarization coupled dual-focused second-harmonic generations in a two-dimensional optical superlattice.},
  author={Xu-hao Hong and Bo Yang and Ding Zhu and Zhao Zhang and Chao Zhang and Huang W Huang and Yi-qiang Qin and Yong-yuan Zhu},
  journal={Optics letters},
  year={2013},
  volume={38 11},
  pages={1793-5}
}
The nonlinear Huygens-Fresnel principle has been used to design multifunctional nonlinear optical devices. Focused second-harmonic generations have been observed with strong polarization sensitivity. Numerical simulations have been performed, and the results fit well with the experiments. 

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