纤锌矿型量子级联激光器的界面与受限声子比较(英文)  

Comparison of Interface and Confined Phonons in Wurtzite Quantum Cascade Laser

作　　者：陈贵楚[1] 范广涵[2] 

机构地区：[1]肇庆学院物理系,广东肇庆526061 [2]华南师范大学光电子材料与技术研究所,广州510631

出　　处：《光子学报》2010年第8期1519-1523,共5页Acta Photonica Sinica

基　　金：Supported by the National Natural Science Foundation of China(50602018);the Important Itemin Key Domain of Guangdong and Hongkong(2007A010501008)

摘　　要：利用传输矩阵方法对纤锌矿型量子级联激光器有源区的界面与受限声子进行了研究.计算结果显示:在纵光学频域有一组界面声子与二组受限声子存在,而且最低频率的两个界面声子在一定条件下能转变为受限模式.通过比较界面声子与受限声子的色散及声子势发现两者有很大不同,且计算电声散射速率可以发现由这两种声子引起的散射率是可比拟的.The interface and confined phonon modes of the wurtzite quantum cascade laser are investigated using the transfer-matrix method.One group of interface modes and two groups of confined modes are presented in the longitudinal optical frequency domain,and the interface modes can be transited into the confined modes for two lowest frequency modes.The dispersions and electronic potentials of the interface and confined modes are obviously different,and the scattering rate induced by the confined mode is comparable to that induced by the interface mode.

关 键 词：ALGAN/GAN 量子级联激光器 界面 受限 散射率 

分 类 号：O431.2[机械工程—光学工程]