Electron-Phonon Interactions on the Optical Kerr Effect in a Quantum Disc  

作　　者：郭康贤 

机构地区：[1]Department of Physics, School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510405

出　　处：《Chinese Physics Letters》2005年第11期2953-2956,共4页中国物理快报（英文版）

基　　金：Supported the National Natural Science Foundation of China under Grant No 60478010, the Science and Technology Committee of Guangdong Province under Grant Nos 2003c103021 and 2004B10301014, the Science and Technology Bureau of Guangzhou under Grant Nos 200J1-C0031 and 2004J1-C0226, and the Education Bureau of Guangzhou under Grant No 2024.

摘　　要：The optical Kerr effect in a quantum disc is investigated with the density-matrix approach, most emphasis is devoted to the electron-phonon interactions on the optical Kerr effect. The numerical results are presented with characteristic parameters of a GaAs quantum disc. It is shown that the optical Kerr effect increases as the disc thickness D decreases. LO-phonons impose greater influence on the optical Kerr effect than SO-phonons. The smaller the disc thickness D, the sharper the peak, and the larger the peak intensity. When the disc thickness is greater than 30, the peak will disappear gradually.The optical Kerr effect in a quantum disc is investigated with the density-matrix approach, most emphasis is devoted to the electron-phonon interactions on the optical Kerr effect. The numerical results are presented with characteristic parameters of a GaAs quantum disc. It is shown that the optical Kerr effect increases as the disc thickness D decreases. LO-phonons impose greater influence on the optical Kerr effect than SO-phonons. The smaller the disc thickness D, the sharper the peak, and the larger the peak intensity. When the disc thickness is greater than 30, the peak will disappear gradually.

关 键 词：3RD-HARMONIC GENERATION DOTS WIRES PHOTOLUMINESCENCE DEPENDENCE MODES SLAB 

分 类 号：O43[机械工程—光学工程]