Open AccessStochastic polarization switching induced by optical injection in bimodal quantum-dot micropillar lasers
Author(s) -
Elisabeth Schlottmann,
David Schicke,
Felix Krüger,
Benjamin Lingnau,
Christian Schneider,
Sven Höfling,
Kathy Lüdge,
Xavier Porté,
Stephan Reitzenstein
Publication year - 2019
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.27.028816
Subject(s) - laser , quantum dot , spontaneous emission , photonics , semiconductor laser theory , amplified spontaneous emission , polarization (electrochemistry) , optoelectronics , optics , quantum dot laser , materials science , context (archaeology) , quantum optics , optical switch , physics , paleontology , chemistry , biology
Mutual coupling and injection locking of semiconductor lasers is of great interest in non-linear dynamics and its applications for instance in secure data communication and photonic reservoir computing. Despite its importance, it has hardly been studied in microlasers operating at μW light levels. In this context, vertically emitting quantum dot micropillar lasers are of high interest. Usually, their light emission is bimodal, and the gain competition of the associated linearly polarized fundamental emission modes results in complex switching dynamics. We report on selective optical injection into either one of the two fundamental mode components of a bimodal micropillar laser. Both modes can lock to the master laser and influence the non-injected mode by reducing the available gain. We demonstrate that the switching dynamics can be tailored externally via optical injection in very good agreement with our theory based on semi-classical rate equations.