Second-harmonic generation in periodically poled GaN
Second-harmonic generation in periodically poled GaN
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DOI：
10.1063/1.1599044
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发表时间：
2003-08-11
影响因子：
4
通讯作者：
Weimann, NG
中科院分区：
文献类型：
--
作者：
Chowdhury, A;Ng, HM;Weimann, NG
我们报告了通过一阶准相位匹配在周期性极化 GaN 中产生二次谐波的实验演示。周期性极化结构是通过等离子体辅助分子束外延生长的。我们从 1658.6 nm 的基本输入激光波长中观察到约 9 muW 的二次谐波功率，归一化转换效率为 12.76% W-1 cm(-2)。通过周期性极化进行非线性波长转换的能力以及 GaN 具有非常宽的透明窗口的事实，为 GaN 用于电信中的非线性光学器件以及用于远红外和深紫外生化检测的非线性光源铺平了道路。 (C) 2003 年美国物理研究所。
We report the experimental demonstration of second-harmonic generation in periodically poled GaN by first-order quasiphase matching. The periodically poled structure was grown by plasma-assisted molecular-beam epitaxy. We observed about 9 muW of second-harmonic power from a fundamental input laser wavelength of 1658.6 nm with a normalized conversion efficiency of 12.76% W-1 cm(-2). The ability to perform nonlinear wavelength conversion by periodic poling and the fact that GaN has a very wide window of transparency, pave the way for GaN to be used for nonlinear optical devices in telecommunications as well as a nonlinear light source for biochemical detection in the far infrared and deep ultraviolet. (C) 2003 American Institute of Physics.