3 October 1996 Growth of a new self-frequency-doubling medium: optical superlattice Nd:MgO:LiNbO3 and its laser and nonlinear optical properties
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Abstract
A new multifunctional active medium: optical superlattice Nd:MgO:LiNbO3, i.e., LiNbO3 crystal with periodic ferroelectric domain structures, was grown in our laboratory. The absorption and fluorescence spectra of a sample with the modulation period of 7.5 micrometer were carefully measured and show some differences from the results of common Nd:MgO:LiNbO3 with monodomain structure. Third-order quasi-phase-matched second harmonic generation was also demonstrated to characterize the nonlinear optical properties of the sample. These results indicate that the optical superlattice LiNbO3 has great potentials for self-frequency-doubling operation using the maximum nonlinear coefficient d33 of LiNbO3 and high gain pi polarization at the same time. Pumped by a pulsed dye laser, self-frequency-doubling green light was observed in a cavity with great loss.
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Yan-qing Lu, Yan-qing Lu, Ya-Lin Lu, Ya-Lin Lu, Cheng-cheng Xue, Cheng-cheng Xue, Xiangfei Chen, Xiangfei Chen, Jian-jun Zhen, Jian-jun Zhen, Naiben Ming, Naiben Ming, } "Growth of a new self-frequency-doubling medium: optical superlattice Nd:MgO:LiNbO3 and its laser and nonlinear optical properties", Proc. SPIE 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications, (3 October 1996); doi: 10.1117/12.252956; https://doi.org/10.1117/12.252956
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