Ultraslow Optical Solitons in a Coupled Double Quantum-Well Nanostructure

作     者：HAO Xiang-Ying LIU Ji-Bing LU Xin-You SONG Pei-Jun SI Liu-Gang 

作者机构：Physics Department Huazhong University of Science and Technology Wuhan 430074 China Department of Physics Hubei Normal University Huangshi 435002 China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2009年第51卷第3期

页      面：519-523页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：supported in part by the National Natural Science Foundation of China under Grant Nos.10575040.90503010.10634060,and 10747133 the National Basic Research Program of China under Grant No.2005CB724508 

主　　题：optical solitons intersubband transitions semiconductor quantum well 

摘      要：We demonstrate the formation of ultraslow dark semiconductor double quantum well （SDQW） structure based optical solitons with a four-level scheme in an asymmetric on intersubband transitions by using only a low-intensity pulsed laser radiation. With appropriate conditions we show numerically that the dark optical soliton can travel with a ultraslow group velocity Vg/c - -10^-3. Such a semiconductor system is much more practical than its atomic counterpart because of its flexible design and the controllable interference strength. This nonlinear optical process in the SDQW solid-state material may be used for the control technology of optical delay lines and optical buffers.