6533b827fe1ef96bd1285965

RESEARCH PRODUCT

Absorption spectroscopy of single InAs self-assembled quantum dots

Richard J. WarburtonJuan P. Martínez-pastorBenito AlénBenito AlénKhaled KarraiPierre PetroffF Bickel

subject

Materials scienceAbsorption spectroscopyExcitonResonanceCondensed Matter::Mesoscopic Systems and Quantum Hall EffectCondensed Matter PhysicsLaserAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialslaw.inventionsymbols.namesakeStark effectQuantum dot laserlawQuantum dotsymbolsQuantum-optical spectroscopyAtomic physics

description

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.

yearjournalcountryeditionlanguage
2004-03-01Physica E: Low-dimensional Systems and Nanostructures
https://doi.org/10.1016/j.physe.2003.11.066