›› 2014, Vol. 23 ›› Issue (10): 104205-104205.doi: 10.1088/1674-1056/23/10/104205

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

Phase control of group-velocity-based biexciton coherence ina multiple quantum well nanostructure

Seyyed Hossein Asadpour, H. Rahimpour Soleimani   

  1. Department of Physics, University of Guilan, Rasht, Iran
  • 收稿日期:2014-01-08 修回日期:2014-03-05 出版日期:2014-10-15 发布日期:2014-10-15

Phase control of group-velocity-based biexciton coherence ina multiple quantum well nanostructure

Seyyed Hossein Asadpour, H. Rahimpour Soleimani   

  1. Department of Physics, University of Guilan, Rasht, Iran
  • Received:2014-01-08 Revised:2014-03-05 Online:2014-10-15 Published:2014-10-15
  • Contact: Seyyed Hossein Asadpour E-mail:S.Hosein.Asadpour@gmail.com
  • About author:42.50.-p; 42.65.-k

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摘要： A double cascade-type four-level multiple-quantum-well-based exciton-biexciton transitions are proposed. The study is carried out on a 4.8-nm ZnSe single-quantum well which is embedded into ZnMgSSe cladding layers and pseudomorphically grown by molecular beam epitaxy on a (0 0 1) GaAs substrate. It is displayed that the exciton spin relaxation and relative phases between applied fields can influence the transient and steady-state behaviors of absorption, dispersion, and group velocity of two weak probe and signal fields. Also, transient behaviors of electron population of different levels are discussed. It is found that the probe or signal amplification occurs in the absence of population inversion.

关键词: exciton-spin relaxation, biexciton coherence, relative phase between applied fields

Abstract: A double cascade-type four-level multiple-quantum-well-based exciton-biexciton transitions are proposed. The study is carried out on a 4.8-nm ZnSe single-quantum well which is embedded into ZnMgSSe cladding layers and pseudomorphically grown by molecular beam epitaxy on a (0 0 1) GaAs substrate. It is displayed that the exciton spin relaxation and relative phases between applied fields can influence the transient and steady-state behaviors of absorption, dispersion, and group velocity of two weak probe and signal fields. Also, transient behaviors of electron population of different levels are discussed. It is found that the probe or signal amplification occurs in the absence of population inversion.

Key words: exciton-spin relaxation, biexciton coherence, relative phase between applied fields

中图分类号:  (Quantum optics)

  • 42.50.-p
42.65.-k (Nonlinear optics)