氧化锌随机激光器脊状波导外延层的设计研究  

Design and Study of ZnO Ridge-Waveguide Random Laser Extension Layer

作　　者：李志全[1] 刘玮[1] 牛力勇[1] 李文超[2] 孙宇超[1] 

机构地区：[1]燕山大学电气工程学院,河北秦皇岛066004 [2]东北大学秦皇岛分校自动化系,河北秦皇岛066004

出　　处：《中国激光》2011年第11期79-83,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金(60877047);河北省自然科学基金(F20100002002)资助课题

摘　　要：研究了ZnO薄膜脊状波导结构的光学特性,并通过在ZnO薄膜上覆盖MgO外延层方式,降低随机激光器的散射损耗。采用有限时域差分法(FDTD)数值模拟得出了仿真结果,验证了ZnO脊状波导随机激光器可以实现高度方向化出射,带有MgO外延层的ZnO脊状波导随机激光器可以避免激光的非轴向出射和降低散射损耗等特性。The optical properties of ZnO thin-film ridge-waveguide are studied, and the reduction of scattering loss inside the random cavities can also be obtained by covered ZnO films with MgO capped layer. Additionally, the finite difference time domain（FDTD） method for numerical calculation is utilized. The simulation results show that random laser with low scattering loss and directional optical output from the facets can be reached by employing annealed ZnO thin-film ridge-waveguide with a MgO capped layer.

关 键 词：激光器 随机激光 ZNO薄膜 脊状波导 有限时域差分法 

分 类 号：TN248[电子电信—物理电子学] O436[机械工程—光学工程]