Origin of the Inner Ring in Photoluminescence Patterns of Quantum Well Excitons

Abstract

In order to explain and model the inner ring in photoluminescence (PL) patterns of indirect excitons in GaAs/AlGaAs quantum wells (QWs), we develop a microscopic approach formulated in terms of coupled nonlinear equations for the diffusion, thermalization and optical decay of the particles. The origin of the inner ring is unambiguously identified: it is due to cooling of indirect excitons in their propagation from the excitation spot.

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Document Details

Document Type
Technical Report
Publication Date
Mar 15, 2006
Accession Number
ADA455350

Entities

People

  • A. C. Gossard
  • A. L. Ivanov
  • A. T. Hammack
  • L. E. Smallwood
  • L. V. Bulov
  • Sen Yang

Organizations

  • University of California, San Diego

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Coefficients
  • Demographic Cohorts
  • Diffusion
  • Diffusion Coefficient
  • Diseases And Disorders
  • Emission
  • Energy
  • Equations
  • Excitation
  • Excitons
  • Experimental Data
  • Laser Spots
  • Materials
  • Optical Properties
  • Quantum Wells
  • Scattering
  • Two Dimensional

Readers

  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Theoretical Analysis.

Technology Areas

  • Microelectronics
  • Quantum Computing