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Proceedings Paper

Strain spectrally-tunable single-photon source based on a quantum dot in microcavity (Conference Presentation)
Author(s): Magdalena Moczala-Dusanowska; Łukasz Dusanowski; Stefan Gerhardt; Yu Ming He; Marcus Reindl; Armando Rastelli; Rinaldo Trotta; Niels Gregersen; Sven Höfling; Christian Schneider

Paper Abstract

Epitaxially grown self-assembled quantum dots (QDs) are promising candidates for an efficient single-photon generation. In order to maximize the number of photons extracted from the device, QDs are frequently embedded into photonic structures such as micro-cavities. Once the QD is positioned inside an optical cavity, the Purcell effect ensures that light is emitted predominantly into the cavity mode. In this contribution, we demonstrate results of emission tuning of QDs inserted in micro-cavities. A sample containing an InAs/GaAs QDs embedded in a planar cavity based on Bragg reflectors has been integrated onto the PMN-PT piezo crystal. Subsequently, micro-cavities have been fabricated by electron-beam lithography and reactive ion etching. The application of external stress produces linear shifts of QDs emission which could be tuned into the resonance with fundamental cavity mode and allow enhancement of QD emission due to the Purcell effect.

Paper Details

Date Published: 9 March 2020
Proc. SPIE 11274, Physics and Simulation of Optoelectronic Devices XXVIII, 112740Q (9 March 2020); doi: 10.1117/12.2544193
Show Author Affiliations
Magdalena Moczala-Dusanowska, Julius-Maximilians-Univ. Würzburg (Germany)
Łukasz Dusanowski, Julius-Maximilians-Univ. Würzburg (Germany)
Stefan Gerhardt, Julius-Maximilians-Univ. Würzburg (Germany)
Yu Ming He, Univ. of Science and Technology of China (China)
Marcus Reindl, Institut für Halbleiter- und Festkörperphysik, Johannes Kepler Univ. Linz (Austria)
Armando Rastelli, Institut für Halbleiter- und Festkörperphysik, Johannes Kepler Univ. Linz (Austria)
Rinaldo Trotta, Institut für Halbleiter- und Festkörperphysik, Johannes Kepler Univ. Linz (Austria)
Sapienza Univ. di Roma (Italy)
Niels Gregersen, Technical Univ. of Denmark (Denmark)
Sven Höfling, Julius-Maximilians-Univ. Würzburg (Germany)
Univ. of St. Andrews (United Kingdom)
Christian Schneider, Julius-Maximilians-Univ. Würzburg (Germany)

Published in SPIE Proceedings Vol. 11274:
Physics and Simulation of Optoelectronic Devices XXVIII
Bernd Witzigmann; Marek Osiński; Yasuhiko Arakawa, Editor(s)

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