中国物理B ›› 2013, Vol. 22 ›› Issue (2): 24209-024209.doi: 10.1088/1674-1056/22/2/024209

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Influences of control coherence and decay coherence on optical bistability in a semiconductor quantum well

艾剑锋, 陈爱喜, 邓黎   

  1. Department of Applied Physics, East China Jiaotong University, Nanchang 330013, China
  • 收稿日期:2012-06-16 修回日期:2012-07-16 出版日期:2013-01-01 发布日期:2013-01-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11165008 and 11065007); the Natural Science Foundation of Jiangxi Province, China (Grant Nos. 20114BAB202001 and 2010GQW0011); and the Science Foundation of East China Jiaotong University, China (Grant No. 10JC03).

Influences of control coherence and decay coherence on optical bistability in a semiconductor quantum well

Ai Jian-Feng (艾剑锋), Chen Ai-Xi (陈爱喜), Deng Li (邓黎)   

  1. Department of Applied Physics, East China Jiaotong University, Nanchang 330013, China
  • Received:2012-06-16 Revised:2012-07-16 Online:2013-01-01 Published:2013-01-01
  • Contact: Chen Ai-Xi E-mail:aixichen@ecjtu.jx.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11165008 and 11065007); the Natural Science Foundation of Jiangxi Province, China (Grant Nos. 20114BAB202001 and 2010GQW0011); and the Science Foundation of East China Jiaotong University, China (Grant No. 10JC03).

摘要: We discuss the influences of two different types of mechanisms of quantum coherence on optical bistability in a semiconductor quantum well structure. In the first mechanism, only quantum coherence induced by the resonant coupling of a strong control laser is considered. In the second mechanism, the decay coherence is taken into account under the condition where the control field is weak. In two different cases, optical bistability can be obtained through choosing appropriate physical parameters. Our studies show quantum coherence makes the optical nonlinear effect of the system become stronger, which takes an important role in the process of generating optical bistability. Semiconductor quantum well with flexibility and easy integration in design could potentially be exploited in real solid-state devices.

关键词: optical bistability, decay coherence, control coherence

Abstract: We discuss the influences of two different types of mechanisms of quantum coherence on optical bistability in a semiconductor quantum well structure. In the first mechanism, only quantum coherence induced by the resonant coupling of a strong control laser is considered. In the second mechanism, the decay coherence is taken into account under the condition where the control field is weak. In two different cases, optical bistability can be obtained through choosing appropriate physical parameters. Our studies show quantum coherence makes the optical nonlinear effect of the system become stronger, which takes an important role in the process of generating optical bistability. Semiconductor quantum well with flexibility and easy integration in design could potentially be exploited in real solid-state devices.

Key words: optical bistability, decay coherence, control coherence

中图分类号:  (Optical bistability, multistability, and switching, including local field effects)

  • 42.65.Pc
68.65.Fg (Quantum wells)