纵波光学声子耦合对级联型电磁感应透明半导体量子阱中暗-亮光孤子类型的调控  

Controlling of dark or bright soliton type in a cascade-type electromagnetically induced transparency semiconductor quantum well by the coupling longitudinal optical phonons

作　　者：唐宏[1] 王登龙[1] 张蔚曦[2] 丁建文[1] 肖思国[1] Tang Hong Wang Deng-Long Zhang Wei-Xi Ding Jian-Wen Xiao Si-Guo(School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, China College of Physics and Electronic Engineering, Tongren University, Tongren 554300, China)

机构地区：[1]湘潭大学物理与光电工程学院,湘潭411105 [2]铜仁学院物理与电子工程学院,铜仁554300

出　　处：《物理学报》2017年第3期277-284,共8页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:11474245;11374252;51372214);贵州省教育厅自然科学研究项目(批准号:KY(2015)384;KY(2015)446)资助的课题~~

摘　　要：利用多重尺度法,解析地研究了计及纵波光学声子耦合弛豫效应下级联型三能级电磁诱导透明半导体量子阱介质中时间光孤子的动力学特征.结果表明:纵波光学声子耦合强度的大小能有效调控体系时间光孤子的类型;发现孤子的群速度也可通过纵波光学声子耦合强度和控制光来调控.这为实验上如何操控半导体量子阱的孤子动力学提供了一定的理论依据.In the past few years, with developing the technology of electromagnetically induced transparency（EIT） and improving the semiconductor technology, it has become possible to realize the application of optical soliton to communication device. Studies show the reduction of group velocity of the optical soliton in EIT medium under weak driving condition, which possibly realizes the storing of optical pulses in information storage. More importantly, semiconductor quantum wells have the inherent advantages such as large electric dipole moments of the transitions, high nonlinear optical coefficients, small size, easily operating and integrating. So it is considered to be the most potential EIT medium to realize the application of quantum devices. The optical soliton behavior in the semiconductor quantum well is studied,which can provide a certain reference value for the practical application of information transmission and processing together quantum devices.Although there has been a series of researches on both linear and nonlinear optical properties in semiconductor quantum wells structures, few publications report the effects of the cross-coupling longitude-optical phonon（CCLOP）relaxation on its linear and nonlinear optical properties. However, to our knowledge, the electron-longitude-optical phonon scattering rate can be realized experimentally by varying the sub-picosecond range to the order of a picosecond.According to this, we in the paper study the effects of the CCLOP relaxation on its linear and nonlinear optical properties in a cascade-type three-level EIT semiconductor quantum well.According to the current experimental conditions, we first propose a cascade-type three-level EIT semiconductor quantum well model. And in this model we consider the longitudinal optical phonons coupling between the bond state and anti-bond state. Subsequently, by using the multiple-scale method, we analytically study the dynamical properties of solitons in the cascade-type three-level EIT semiconductor quantum well with t

关 键 词：纵波光学声子耦合 电磁诱导透明 半导体量子阱 

分 类 号：O471.1[理学—半导体物理]