Open AccessLasing properties of non-resonant single quantum dot-cavity system under incoherent excitation
Author(s) -
Huan Guan,
Peijun Yao,
Wenhai Yu,
Pei Wang,
Hai Ming
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.028437
Subject(s) - lasing threshold , physics , quantum dot , oscillation (cell signaling) , laser , atomic physics , excitation , quantum dot laser , photon , electron , spectral line , optics , semiconductor laser theory , optoelectronics , quantum mechanics , biology , genetics
Single quantum dot laser has earned extensive interest due to its peculiar properties, however, most of works are focused on the resonant case. In this paper, the lasing oscillation based on off-resonant quantum dot (QD)-cavity system is investigated detailedly through two-electrons QD model. By gradually increasing the pump rate, the typical lasing signatures are shown with and without detuning, include the spectral transition from multiple peaks to single peak, and antibunching to Poissonian distribution. It is also demonstrated how detuning factor strongly influence photon statistics and emission properties, specially, the side peak of spectra induced by the exchange energy (named "sub-peak") will go across the main peak from left to right when the detuning is gradually increased, and, furthermore, we find the "sub-peak cross of spectra" will facilitate the lasing oscillation because of the existence of exchange energy.