Theoretical Research of PR SEW at the LiNbO3 -Air Interface

Tianhao Zhang; Dapeng Yang; Yanzhen Lu; Huizhen Kang; Zheyu Fang; Zhijian Hu; Xiangkui Ren

doi:10.1364/PEMD.2005.451

Photorefractive Effects, Materials, and Devices
OSA Trends in Optics and Photonics (Optica Publishing Group, 2005),
paper 451
•https://doi.org/10.1364/PEMD.2005.451

Theoretical Research of PR SEW at the LiNbO₃ -Air Interface

Tianhao Zhang, Dapeng Yang, Yanzhen Lu, Huizhen Kang, Zheyu Fang, Zhijian Hu, and Xiangkui Ren

Photorefractive Effects, Materials, and Devices 2005

Sanya, Hainan China
ISBN: 1-55752-793-8

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T. Zhang, D. Yang, Y. Lu, H. Kang, Z. Fang, Z. Hu, and X. Ren, "Theoretical Research of PR SEW at the LiNbO3 -Air Interface," in Photorefractive Effects, Materials, and Devices, G. Zhang, D. Kip, D. Nolte, and J. Xu, eds., Vol. 99 of OSA Trends in Optics and Photonics (Optica Publishing Group, 2005), paper 451.

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Abstract

The nonlinear photorefractive surface electromagnetic waves (PR SEW) based on the photovoltaic (PV) effect at the LiNbO₃-air interface is analyzed theoretically for the first time to our known. We show theoretically that when an extraordinarily polarized signal beam and an ordinarily polarized background beam are launched onto the interface between air and LiNbO₃ crystal whose κ₃₁₁ > κ₃₃₃, the refractive-index change ∆n (induced by the PV effect) reverses its polarity. We have solved the equations numerically and the stationary solution of the signal beam is obtained, which decays from the crystal-air interface to the bulk of the crystal.

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