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Laser action in electrically driven quantum dot matrix
Author(s) -
Krasnyj J.,
Chuchmała A.,
Jacak W.,
Tytus M.,
Donderowicz W.
Publication year - 2007
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200675356
Subject(s) - quantum dot , population inversion , lasing threshold , electric field , laser , physics , matrix (chemical analysis) , action (physics) , photon , population , exact solutions in general relativity , quantum mechanics , materials science , demography , sociology , composite material
Abstract 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. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)