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Tunable Second Harmonic Generation with High Conversion Efficiency in Periodically Poled Lithium Niobate Channel Waveguide

分类：O437.4[机械工程—光学工程;理学—光学;理学—物理]
作者机构：Inst.of Optics & Photonics Dept.of Physics, Shanghai Jiaotong Univ., Inst.of Optics & Photonics, Dept.of Physics, College of Physics and Communication Electronics, Jiangxi Normal Univ., Shanghai 200240, China, College of Physics and Communication Electronics Jiangxi Normal Univ. Nanchang 330027, Nanchang 330027
相关基金：The National Natural Science Foundation ofChina (No 60477016);Shanghai MunicipalEducation Commission“Shu Guang”Project

作者：徐荣辉, 陈险峰, 陈玉萍, 叶志清, 夏宇兴

关键词： PERIODICALLY, poled, lithium, niobate(PPLN), second, harmonic, generation(SHG), WAVEGUIDE, QUASI-PHASE-MATCHING

中文摘要：

The experiment on quasi-phase-matched second harmonic generation (SHG) in a channel waveguide was reported. The waveguide was made by annealed proton exchange in the periodically poled lithium niobate (PPLN) with the period of PPLN of 14.9 μm, which was designed for cascading wavelength conversion in dense wavelength division multiplexer optical communications. The measurement results of SHG conversion efficiency as a function of fundamental wavelength at room temperature fit well to sinc~2 shape. The peak of SHG conversion efficiency was 75%·W~ -1 ·cm~ -2 as well as reported. The relationship between the center fundamental wavelength and temperature shows that SHG can be effectively tuned by the temperature in PPLN waveguide.

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