Microdisk with whispering gallery modes (WGMs) is a prominent candidate for the studies of fundamental properties of cavity quantum electrodynamics (CQED) and the explorations of on-chip light sources or sensors. Here, we report on the significant array effect on WGMs in SiGe microdisk arrays. Systematic photoluminescence spectra demonstrate an optimal microdisk interval associated with wavelength and the array symmetry dependence for each WGM. The enhancement factor of WGM can be increased by over 270% and 120% with the modification of microdisk interval and array symmetry, respectively. Moreover, a single dominant WGM can be achieved in the array of microdisks with intentionally designed nanoholes. The intrinsic mechanism of the array effect is disclosed in terms of the intradisk light field distribution and the interdisk coupling. Our results provide strategies for the substantial enhancement of desired WGM in microdisk array to comprehensively understand CQED and fabricate innovative optoelectronic devices.
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2 December 2024
Research Article|
December 03 2024
Adjustable enhanced photoluminescence in whispering-gallery-mode microdisk arrays
Jia Yan
;
Jia Yan
(Conceptualization, Data curation, Investigation, Software, Writing – original draft, Writing – review & editing)
State Key Laboratory of Surface Physics and Department of Physics, Fudan University
, Shanghai 200438, China
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Zhifang Zhang;
Zhifang Zhang
(Data curation, Software, Writing – review & editing)
State Key Laboratory of Surface Physics and Department of Physics, Fudan University
, Shanghai 200438, China
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Qiang Huang;
Qiang Huang
(Investigation, Writing – review & editing)
State Key Laboratory of Surface Physics and Department of Physics, Fudan University
, Shanghai 200438, China
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Yan Zhan;
Yan Zhan
(Writing – review & editing)
State Key Laboratory of Surface Physics and Department of Physics, Fudan University
, Shanghai 200438, China
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Jingpu Yang;
Jingpu Yang
(Investigation)
State Key Laboratory of Surface Physics and Department of Physics, Fudan University
, Shanghai 200438, China
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Wei Luo;
Wei Luo
(Investigation)
State Key Laboratory of Surface Physics and Department of Physics, Fudan University
, Shanghai 200438, China
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Zuimin Jiang
;
Zuimin Jiang
(Writing – review & editing)
State Key Laboratory of Surface Physics and Department of Physics, Fudan University
, Shanghai 200438, China
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Zhenyang Zhong
Zhenyang Zhong
a)
(Conceptualization, Funding acquisition, Resources, Supervision, Writing – review & editing)
State Key Laboratory of Surface Physics and Department of Physics, Fudan University
, Shanghai 200438, China
a)Author to whom correspondence should be addressed: [email protected]
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a)Author to whom correspondence should be addressed: [email protected]
Appl. Phys. Lett. 125, 231107 (2024)
Article history
Received:
October 30 2024
Accepted:
November 17 2024
Citation
Jia Yan, Zhifang Zhang, Qiang Huang, Yan Zhan, Jingpu Yang, Wei Luo, Zuimin Jiang, Zhenyang Zhong; Adjustable enhanced photoluminescence in whispering-gallery-mode microdisk arrays. Appl. Phys. Lett. 2 December 2024; 125 (23): 231107. https://doi.org/10.1063/5.0246181
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