激光技术, 2007, 31 (2): 0120, 网络出版: 2010-06-03
周期极化掺镁铌酸锂晶体光参变产生研究
Study on optical parametric generation based on periodically poled MgO∶LiNbO3 crystal
激光技术 光参变产生 周期极化掺镁铌酸锂晶体 准相位匹配 laser technique optical parametric generation(OPG) periodically poled MgO∶LiNbO3 crystal( quasi-phase match
摘要
为了获得1．5μm波段可调谐红外光输出，采用短脉冲电场极化法，在1mm厚的掺镁(摩尔分数为0．05)铌酸锂晶体上成功制备了周期为29μm的极化光栅。利用声光调Q Nd∶YVO4固体激光器直接抽运PPMgLN晶体，开展了OPG光学转换研究工作。在输入3W的抽运光时，得到信号光输出功率为44mW，转换效率1．5%。并通过调谐晶体温度(45℃～160℃)，获得了调谐范围1．4538μm～1．4750μm的信号光输出。实现了可调谐红外光的输出，验证了晶体周期结构的均匀性。
Abstract
By using short-pulse field,the periodically poled grating(Λ =29μm)was successfully fabricated in 1.Omm thick MgO∶LiNbO3(mole fraction of doped MgO is 0.05). A high-repetition-rate optical parametric generation(OPG)based on PPMgLN pumped by a 1.064μm acousto-optically Q-switched Nd∶YVO4 laser. Under the condition of 3W of input pump power,44mW of output signal power was obtained,and the conversion efficiency was 1.5%. Furthermore a tunable infrared(IR)output from 1.4538μm～1.4750μm was obtained by tuning the temperature of PPMgLN(45℃～160 ℃).
薛亮平, 姚江宏, 颜博霞, 贾国治, 许京军, 张光寅. 周期极化掺镁铌酸锂晶体光参变产生研究[J]. 激光技术, 2007, 31(2): 0120. XUE Liang-ping, YAO Jiang-hong, YAN Bo-xia, JIA Guo-zhi, XU Jing-jun, ZHANG Guang-yin. Study on optical parametric generation based on periodically poled MgO∶LiNbO3 crystal[J]. Laser Technology, 2007, 31(2): 0120.
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