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准相位匹配周期极化掺镁铌酸锂490 nm倍频连续输出
引用本文:陈云琳,郭娟,刘晓娟,吴朝晖,宋峰,罗勇锋,张万林,孔勇发,许京军.准相位匹配周期极化掺镁铌酸锂490 nm倍频连续输出[J].光子学报,2005,34(1):29-31.
作者姓名:陈云琳  郭娟  刘晓娟  吴朝晖  宋峰  罗勇锋  张万林  孔勇发  许京军
作者单位:1. 南开大学物理学院光电材料研发中心,天津,300071
2. 南开大学物理学院光子学中心,天津,300071
基金项目:国家自然科学基金(编号:10174040)、天津市重点自然科学基金(033800111)和天津市国际合作项目资助课题
摘    要:在室温下通过外加电场极化法,首次用较低的极化开关电场~5.5 kV/mm,在厚为1 mm、长为20 mm、宽为18 mm的掺镁铌酸锂基片上成功的制备了周期为4.8~5.2 μm的一阶准相位匹配倍频光学微结构;并在室温下,以波长为980 nm的半导体激光器为基频光源,对所研制的微结构样品进行倍频通光实验,在入射基频光为800 mW时,产生约40 mW的490 nm的倍频光,其对应转换效率为5%,实验过程中未见绿致吸收光折变现象.

关 键 词:周期极化掺镁铌酸锂光学微结构  准相位匹配  倍频
收稿时间:2003-11-03
修稿时间:2003年11月3日

Continuous-wave Quasi-phase-matched Second Harmonic Generation at 490 nm in Periodically Poled MgO:LiNbO3

.Continuous-wave Quasi-phase-matched Second Harmonic Generation at 490 nm in Periodically Poled MgO:LiNbO3[J].Acta Photonica Sinica,2005,34(1):29-31.
Authors:
Institution:(1 Photo-electronic Materials Center, Institute of Physics Science, Nankai University, Tianjin 300071)
(2 Photonics Center, Institute of Physics Science, Nankai University, Tianjin 300071)
Abstract:A first order quasi-phase-matched periodically poled micro-structure MgO∶LiNbO 3 for SHG with 4.8~5.2 μm period, 20 mm length, 18 mm width and 1 mm thickness has been successfully fabricated by applying an external field at room temperature. Because the switching field of MgO∶LiNbO 3 is ~5.5 kV/mm, which is approximately one fourth that of the conventional congruent field, periodic poling of thicker MgO∶LiNbO 3 substrates was successfully performed by means of an electric field poling process at room temperature. Using the sample to double the frequency of a diode laser at 980 nm was studied. About 40 mW of CW 490 nm blue light was obtained pumped by 800 mW of the fundamental power, which corresponds to 5% power conversion efficiency. No obvious optical damage has been observed.
Keywords:Periodically poled micro-structure MgO∶LiNbO 3  Quasi-phase-matched  Double frequency
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