Fine Structure Splitting in the Optical Spectra of Single GaAs Quantum Dots

Abstract

We report a photoluminescence study of excitons localized by interface fluctations in a narrow GaAs/AlGaAs quantum well. This type of structure provides a valuable system for the optical study of quantum dots. By reducing the area of the sample studied down to the optical near-field regime, only a few dots are probed. With resonant excitation we measure the excited-state spectra of single quantum dots. Many of the spectral lines are linearly polarized with a fine structure splitting of 20-50 mueV. These optical properties are consistent with the characteristic asymmetry of the interface fluctuations.

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Document Details

Document Type
Technical Report
Publication Date
Apr 15, 1996
Accession Number
ADA483899

Entities

People

  • Benjamin V. Shanabrook
  • D. Gammon
  • D. Scott Katzer
  • Doewon Park
  • E. S. Snow

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Asymmetry
  • Depolarization
  • Detection
  • Detectors
  • Ground State
  • Linear Polarization
  • Near Field
  • Optical Properties
  • Polarization
  • Quantum Dots
  • Quantum Wells
  • Spectra
  • Spectral Lines
  • Spectroscopy
  • Spin-Orbit Interaction
  • Splitting
  • Subatomic Particles

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Quantum Computing
  • Quantum Science - Quantum Dots