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Computation of the coherence time of quantum‐dot microcavity lasers including photon–carrier and photon–photon correlations
Author(s) -
Wiersig Jan
Publication year - 2011
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201000825
Subject(s) - coherence (philosophical gambling strategy) , photon , physics , coherence time , quantum dot , laser , cluster (spacecraft) , coherence length , correlation function (quantum field theory) , quantum optics , optoelectronics , quantum mechanics , computer science , superconductivity , dielectric , programming language
Microcavity lasers with semiconductor quantum dots as active material have attracted considerable attention recently. We present a theoretical study of the first‐order coherence of such novel light sources. The correlation function $g^{(1)} ({\tau} )$ and the corresponding coherence time are computed including photon–carrier and photon–photon correlations with respect to the delay time τ up to the quadruplet level of the cluster expansion scheme. A comparison of the different levels of the cluster expansion is provided.