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Main Title: Quantum-dot micropillar lasers subject to coherent time-delayed optical feedback from a short external cavity
Author(s): Holzinger, Steffen
Schneider, Christian
Höfling, Sven
Porte, Xavier
Reitzenstein, Stephan
Type: Article
Language Code: en
Abstract: We investigate the mode-switching dynamics of an electrically driven bimodal quantum-dot micropillar laser when subject to delayed coherent optical feedback from a short external cavity. We experimentally characterize how the external cavity length, being on the same order than the microlaser’s coherence length, influences the spectral and dynamical properties of the micropillar laser. Moreover, we determine the relaxation oscillation frequency of the micropillar by superimposing optical pulse injection to a dc current. It is found that the optical pulse can be used to disturb the feedback-coupled laser within one roundtrip time in such a way that it reaches the same output power as if no feedback was present. Our results do not only expand the understanding of microlasers when subject to optical feedback from short external cavities, but pave the way towards tailoring the properties of this key nanophotonic system for studies in the quantum regime of self-feedback and its implementation to integrated photonic circuits.
Issue Date: 24-Jan-2019
Date Available: 11-May-2020
DDC Class: 530 Physik
Subject(s): nanophotonics
photonic devices
quantum dots
semiconductor lasers
optical pulse injection
micropillar laser
Sponsor/Funder: EC/FP7/615613/EU/External Quantum Control of Photonic Semiconductor Nanostructures/EXQUISITE
DFG, 43659573, SFB 787: Halbleiter - Nanophotonik: Materialien, Modelle, Bauelemente
Journal Title: Scientific Reports
Publisher: Springer Nature
Publisher Place: London
Volume: 9
Article Number: 631
Publisher DOI: 10.1038/s41598-018-36599-3
EISSN: 2045-2322
Appears in Collections:AG Optoelektronik und Quantenbauelemente » Publications

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