Periodically domain-inverted LiNbO3 for waveguide quasi-phase matched nonlinear optic wavelength conversion devices

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Abstract

The authors' work on LiNbO3 waveguide quasi-phase matched nonlinear optic wavelength conversion devices is reviewed. The requirements of domain-inverted gratings for efficient wavelength conversions are shown by theoretical analysis of the device performances. The fabrication apparatus of the domain-inverted gratings is described, and it is shown that the fabricated gratings satisfy the requirements. A variety of LiNbO3 waveguide quasi-phase matched (QPM) wavelength conversion devices were fabricated and examined. Second-harmonic green/blue/ultraviolet light generation with normalized conversion efficiencies of approx. 100%/W, third-harmonic generation by cascading second-harmonic generation and sum-frequency generation, and difference-frequency generation for wavelength conversion in infrared wavelength range are demonstrated.

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Fujimura, M., Suhara, T., & Nishihara, H. (1999). Periodically domain-inverted LiNbO3 for waveguide quasi-phase matched nonlinear optic wavelength conversion devices. Bulletin of Materials Science, 22(3), 413–420. https://doi.org/10.1007/BF02749950

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