Absorption spectroscopy of single InAs self-assembled quantum dots

B. Alèn, K. Karrai, R. J. Warburton, F. Bickel, P. M. Petroff, J. Martínez-Pastor

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Excitonic transitions of single InAs self-assembled quantum dots were directly measured at 4.2 K in an optical transmission experiment. We use the Stark effect in order to tune the exciton energy of a single quantum dot into resonance with a narrow-band laser. With this method, sharp resonances in the transmission spectra are observed. The oscillator strengths as well as the homogeneous line widths of the single-dot optical transitions are obtained. A clear saturation in the absorption is observed at modest laser powers. © 2003 Published by Elsevier B.V.

Original languageEnglish
Pages (from-to)395-399
Number of pages5
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume21
Issue number2-4
DOIs
Publication statusPublished - Mar 2004
EventProceedings of the Eleventh International Conference on Modulation (MSS11) - Nara, Japan
Duration: 14 Jul 200318 Jul 2003

Keywords

  • Absorption spectroscopy
  • Quantum dots
  • Relaxation dynamics

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