Gain and propagation in quantum well amplifiers

Stefan Haas, Tineke Stroucken, Andreas Girndt, A. Knorr, Stephan W. Koch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We investigate systems of one, two, and multiple quantum wells separated by thick barriers in such a way that the electronic states are localized in each well. However, the different quantum wells are coupled due to the electromagnetic field. It is shown that the loss of translational invariance in the growth direction affects the interaction between the optical field and the interband polarization. Multiple reflections of the optical field between the different quantum wells occur and significantly modify the interaction dynamics between the optical field and each well. Depending on the geometry and initial conditions the propagation and amplification dynamics of a short pulse in such a system are investigated. An energy transfer between different quantum wells mediated by the laser pulse is observed. Time resolved reflected and transmitted signals for different geometries and numbers of quantum wells are calculated. The influence of Coulomb effects on the reflected and transmitted pulses is studied. It is shown that the interaction dynamics between the laser pulse and the sample shows a strong dependence on the number of quantum wells and the separation between the different wells.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsWeng W. Chow, Marek Osinski
Pages282-287
Number of pages6
StatePublished - Jan 1 1996
EventPhysics and Simulation of Optoelectronic Devices IV - San Jose, CA, USA
Duration: Jan 29 1996Feb 2 1996

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2693

Other

OtherPhysics and Simulation of Optoelectronic Devices IV
CitySan Jose, CA, USA
Period1/29/962/2/96

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Haas, S., Stroucken, T., Girndt, A., Knorr, A., & Koch, S. W. (1996). Gain and propagation in quantum well amplifiers. In W. W. Chow, & M. Osinski (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 282-287). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2693).