Fabrication of two-dimensional elliptic photonic lattices in photorefractive crystal by optical induction method
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We fabricate two-dimensional elliptic photonic lattices in iron-doped lithium niobate photorefractive crystal for the first time with optical induction method. The experimental setup of our method is very simple and flexible without complicated optical adjustment system. We analyze and verify the two-dimensional elliptic photonic lattices by plane wave guiding, far field diffraction pattern imaging, and Brillouin-zone spectroscopy. Induced elliptic photonic lattices can stably exist for a long time in the iron-doped lithium niobate crystal. The induced two-dimensional elliptic photonic lattices might offer an easy method to study generic band gap phenomena in anisotropic periodic structures.
KeywordsOptically induced Two-dimensional Elliptic Photonic lattices Photorefractive Lithium niobate crystal
The authors gratefully acknowledge the support from the National Natural Science Foundation of China (Grant No. 10974121), the Natural Science Foundation of Shandong Province (Grant No. ZR2012EMQ012), the open subject of state key laboratory of crystal materials (Shandong University, Grant No. KF1001) and the science and technology development plan of Tai’An (Grant No. 20112023).
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