Experimental observation of electric-field poling in femtosecond laser carved LiNbO<sub>3</sub> crystal

Ying Wang; Zhigang Zhang; Xiaochang Ni; Jian Yu; Mei Sang; Lei Ji; Qingyue Wang

doi:10.1117/12.693431

10 June 2006 Experimental observation of electric-field poling in femtosecond laser carved LiNbO₃ crystal

Ying Wang, Zhigang Zhang, Xiaochang Ni, Jian Yu, Mei Sang, Lei Ji, Qingyue Wang

Proceedings Volume 6344, Advanced Laser Technologies 2005; 63440C (2006) https://doi.org/10.1117/12.693431
Event: Advanced Laser Technologies 2005, 2005, Tianjin, China

Abstract

We report a preliminary experiment result of poling in a femtosecond-laser-treated LiNbO3 (LN) crystal. Because of the precision of the femtosecond laser machine, we can control the width and depth of snicks exactly. Then the high-voltage electric field was operated on +z side of the LN crystal. The visible poling pattern was observed by a microscope and machining parameter influences the electric field distribution in the crystal. This approach does not need expensive masks and the periods of PPLN can be adjusted flexibly. Although the mechanism of core formation is not very clear yet, we believe that it would provide a novel technique of making prototype PPLN and other periodically poled crystals.

Citation Download Citation

Ying Wang, Zhigang Zhang, Xiaochang Ni, Jian Yu, Mei Sang, Lei Ji, and Qingyue Wang "Experimental observation of electric-field poling in femtosecond laser carved LiNbO₃ crystal", Proc. SPIE 6344, Advanced Laser Technologies 2005, 63440C (10 June 2006); https://doi.org/10.1117/12.693431

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