LiNbO3 Nonlinear Photonic Crystal with 12-Fold Rotational Symmetry
MA Bo-Qin1** , REN Ming-Liang2 , MA Dong-Li2 , LI Zhi-Yuan2
1 College of Science, Communication University of China, Beijing 1000242 Institute of Physics, Chinese Academy of Sciences, Beijing 100190
Abstract ：We fabricate z -cut LiNbO3 nonlinear photonic crystal with two-dimensional dodecagonal superlattice by applying high voltage pulses. By using collinear quasi-phase matching technique, second-harmonics at five wavelengths 620 nm, 574 nm, 555 nm, 515nnm and 492 nm are observed simultaneously in one quasiperiodically poled crystal. The distributions of the reciprocal vectors and the diffraction spots in this quasiperiodic structure are theoretically and experimentally analyzed. The same results can be obtained by rotating around z -axis by intervals of 30°.
收稿日期: 2013-02-27
出版日期: 2013-05-31
:
42.65.Ky
(Frequency conversion; harmonic generation, including higher-order harmonic generation)
42.70.Mp
(Nonlinear optical crystals)
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2013, Vol. 30 
