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Proceedings Paper

Ultraviolet-infrared laser-induced domain inversion in MgO-doped congruent LiNbO3 and near stoichiometric LiTaO3 crystals
Author(s): Ya'nan Zhi; Weijuan Qu; De'an Liu; Jianfeng Sun; Aimin Yan; Liren Liu
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Paper Abstract

Laser-induced domain inversion is a promising technique for domain engineering in LiNbO3 and LiTaO3. The ultraviolet-infrared laser induced domain inversions in MgO-doped congruent LiNbO3 and near stoichiometric LiTaO3 crystals are investigated for the first time here. Within the wavelength range from 351 to 799 nm, the different reductions of nucleation field induced by the focused continuous laser irradiation are systematically investigated in the MgO-doped congruent LiNbO3 crystals. The investigation of ultrashort-pulse laser-induced domain inversion in MgO-doped congruent LiNbO3 is performed with 800 nm wavelength irradiation. The focused continuous ultraviolet laser-induced ferroelectric domain inversion in the near stoichiometric LiTaO3 is also investigated. The different physical explanations, based on space charge field and defect formation, are presented for the laser-induced domain inversion, and the solid experimental proofs are also presented. The results provide the solid experimental proofs and feasible schemes for the further investigation of laser-induced domain engineering in MgO-doped LiNbO3 and near stoichiometric LiTaO3 crystals. The important characteristics of domain inversion, including domain wall and internal field, in LiNbO3 crystals are also investigated by the digital holographic interferometry with an improved reconstruction method, and some creative experimental results and conclusions are achieved.

Paper Details

Date Published: 25 August 2008
PDF: 15 pages
Proc. SPIE 7056, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications II, 70560Y (25 August 2008); doi: 10.1117/12.796343
Show Author Affiliations
Ya'nan Zhi, Shanghai Institute of Optics and Fine Mechanics (China)
Weijuan Qu, Nanyang Technological Univ. (Singapore)
De'an Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Jianfeng Sun, Shanghai Institute of Optics and Fine Mechanics (China)
Aimin Yan, Shanghai Institute of Optics and Fine Mechanics (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 7056:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications II
Shizhuo Yin; Ruyan Guo, Editor(s)

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