Phase control of group velocity via Fano-type interference in a triple semiconductor quantum well

被引：19
|
作者：
Yang, Wen-Xing [1 ,2 ]
Ma, Wen-Hai [1 ]
Yang, Long [1 ]
Zhang, Guo-Rui [1 ]
Lee, Ray-Kuang [2 ]
机构：
[1] Southeast Univ, Dept Phys, Nanjing 210096, Jiangsu, Peoples R China
[2] Natl Tsing Hua Univ, Inst Photon Technol, Hsinchu 300, Taiwan
来源：
OPTICS COMMUNICATIONS | 2014年 / 324卷
基金：
中国国家自然科学基金;
关键词：
Subluminal; Superluminal; Quantum interference; Semiconductor quantum well; ELECTROMAGNETICALLY INDUCED TRANSPARENCY; OPTICAL BISTABILITY; SLOW LIGHT; COHERENT CONTROL; PROPAGATION; GAIN; NANOSTRUCTURES; TRANSITIONS; ABSORPTION; INVERSION;
D O I：
10.1016/j.optcom.2014.03.071
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We analyze the absorption dispersive properties of a weak probe laser field based on the ISBT in a triple semiconductor quantum well (SQW) structure driven coherently by two control laser fields. It is shown that the system can produce anomalous and normal dispersion regions with negligible absorption by adjusting the intensities of the control fields and the Fano-type interference. More interestingly, the dispersion can be changed between normal and anomalous simply by adjusting the relative phase between two coherent control fields due to the existence of the Fano-type interference. Thus the relative phase can be regarded as a switch to manipulate light propagation with subluminal or superluminal. In addition, the temporal and spatial dynamics of the probe laser pulse with Gaussian-type envelope are analyzed. (C) 2014 Elsevier By. All rights reserved,
引用
收藏
页码：221 / 226
页数：6
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