6533b85dfe1ef96bd12be6fd

RESEARCH PRODUCT

Laser action in electrically driven quantum dot matrix

Witold JacakA ChuchmałaW. DonderowiczJ. KrasnyjM. Tytus

subject

PhysicsCondensed matter physicsNumerical analysisSurfaces and InterfacesCondensed Matter PhysicsPopulation inversionMolecular physicsSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsMatrix (mathematics)Linear differential equationQuantum dotElectric fieldDot matrixMaterials ChemistryElectrical and Electronic EngineeringLasing threshold

description

A lasing system based on electrically driven quantum dot matrix is proposed, where population inversion of the dot matrix is obtained by rapid (nonadiabatic) switching on of in-plane electric field as a pumping force. Numerical analysis of electron-photon system kinetics is performed for various electric fields and temperatures. For parabolic type of confinement in QDs, a convenient amplification of contribution from several levels is indicated. The relevant analysis utilises an exact solution of Cauchy problem for an infinite chain of linear differential equations.

yearjournalcountryeditionlanguage
2007-06-01physica status solidi (a)
https://doi.org/10.1002/pssa.200675356