期刊
APPLIED OPTICS
卷 61, 期 28, 页码 8527-8532出版社
Optica Publishing Group
DOI: 10.1364/AO.471587
关键词
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类别
资金
- National Key Research and Development Program of China
- National Natural Science Foundation of China
- [2019YFB2203501]
- [61835008]
- [61905079]
- [61905084]
Bound states in the continuum (BICs) are resonances perfectly confined within the radiation continuum, and have been extensively studied in various wave systems. This study experimentally demonstrates the combination of Fabry-Perot and symmetry-protected BICs at near infrared wavelengths, resulting in enhanced resonance localization.
Bound states in the continuum (BICs) are perfectly confined resonances within the radiation continuum. The novel characteristics of single BICs have been studied in great detail in various wave systems, including electromagnetic waves, acoustic waves, water waves, and elastic waves in solids. In practice, the performance of BICs is limited by the finite size of the structure, while the combination of multiple BICs can further improve the localization of resonances. In this study, we experimentally demonstrate the combination of Fabry-Perot and symmetry-protected BICs at near infrared wavelengths by employing a compound photonic crystal system composed of a photonic crystal slab and a distributed Bragg reflector, resulting in an enhanced high quality factor. (c) 2022 Optica Publishing Group
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