Open AccessTheoretical modelling of single-mode lasing in microcavity lasers via optical interference injection
Author(s) -
Lingfang Wang,
Yun-Ran Wang,
Henry Francis,
Rui Lu,
Mingjun Xia,
Feng Liu,
M. Hopkinson,
Chao-Yuan Jin
Publication year - 2020
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.389860
Subject(s) - lasing threshold , optics , physics , spontaneous emission , semiconductor laser theory , laser , optoelectronics , quantum well , optical microcavity , oscillation (cell signaling) , genetics , biology
The effective manipulation of mode oscillation and competition is of fundamental importance for controlling light emission in semiconductor lasers. Here we develop a rate equation model which considers the spatially modulated gain and spontaneous emission, which are inherently governed by the ripple of the vacuum electromagnetic field in a Fabry-Pérot (FP) microcavity. By manipulating the interplay between the spatial oscillation of the vacuum field and external optical injection via dual-beam laser interference, single longitudinal mode operation is observed in a FP-type microcavity with a side mode suppression ratio exceeding 40 dB. An exploration of this extended rate equation model bridges the gap between the classical model of multimode competition in semiconductor lasers and a quantum-optics understanding of radiative processes in microcavities.