Stress tuning of strong and weak couplings between quantum dots and cavity modes in microdisk microcavities

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Stress tuning of strong and weak couplings between quantum dots and cavity modes in microdisk microcavities

Hsuan Lin, Chia-Hsien Lin, Wei-Chen Lai, Yi-Shan Lee, Sheng-Di Lin, and Wen-Hao Chang

Phys. Rev. B 84, 201301(R) – Published 1 November 2011

Abstract

We present the control of couplings between quantum dots and cavity modes in microdisk microcavities by a stress tuning scheme. The excitonic transitions and cavity modes can be brought into resonance due to their different energy shift rates with the applied strain. Spectral signatures of both strong and weak couplings are clearly observed. The strain tunable device can be used to tune the exciton wavelength bidirectionally at constant temperatures without significantly affecting the emission rate and linewidth of excitons.

Received 17 September 2011

DOI:https://doi.org/10.1103/PhysRevB.84.201301

Authors & Affiliations

Hsuan Lin¹, Chia-Hsien Lin¹, Wei-Chen Lai¹, Yi-Shan Lee², Sheng-Di Lin², and Wen-Hao Chang^1,*

¹Department of Electrophysics, National Chiao Tung University, Hsinchu 300, Taiwan
²Department of Electronics Engineering, National Chiao Tung University, Hsinchu 300, Taiwan

^*whchang@mail.nctu.edu.tw

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Issue

Vol. 84, Iss. 20 — 15 November 2011

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Physical Review B

covering condensed matter and materials physics