Coupling of Photonic and Plasmonic Modes for Double Nanowire Cavities

Author:

Peng Xuanran123,Liu Jing123,Kang Yaru14,Mao Xu1,Yan Wei1,Wang Xiaohui25,Liu Kong25,Xu Rui6,Yang Fuhua123789,Li Zhaofeng124ORCID

Affiliation:

1. Engineering Research Center for Semiconductor Integrated Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

3. College of Materials Science and Opto-Electronics Technology, University of Chinese Academy of Sciences, Beijing 100049, China

4. School of Integrated Circuits, University of Chinese Academy of Sciences, Beijing 100049, China

5. Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

6. Fachgebiet Angewandte Nanophysik, Institut für Physik & IMN MacroNano, Technische Universität Ilmenau, 98693 Ilmenau, Germany

7. State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

8. Beijing Academy of Quantum Information Science, Beijing 100193, China

9. Beijing Engineering Research Center of Semiconductor Micro-Nano Integrated Technology, Beijing 100083, China

Abstract

We analyze the coupling between double nanowire cavities for both photonic modes and plasmonic modes. When the spacing between nanowires reduces, a redshift of the resonant frequency of the symmetric mode and a blueshift of the resonant frequency of the antisymmetric mode are observed. Compared to single nanowire cavity modes, the Q factors of antisymmetric supermodes of double nanowires can be improved by 51% for photonic modes and by 24% for plasmonic modes. The mechanisms of Q factor improvement for photonic modes and plasmonic modes are studied based on the field distribution of radiations from the modes. This paper may contribute to research and applications for double nanowire lasers and nanowire laser arrays.

Funder

National Key R&D Program of China

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics

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