期刊
SCIENCE
卷 367, 期 6475, 页码 288-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaz3985
关键词
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资金
- Australian Research Council
- Australian National University
- National Research Foundation of Korea (NRF) - Korean Government (MSIT) [2018R1A3A3000666]
- Russian Science Foundation [18-72-10140]
- Foundation for the Advancement of Theoretical Physics and Mathematics BASIS
- Russian Science Foundation [18-72-10140] Funding Source: Russian Science Foundation
Subwavelength optical resonators made of high-index dielectric materials provide efficient ways to manipulate light at the nanoscale through mode interferences and enhancement of both electric and magnetic fields. Such Mie-resonant dielectric structures have low absorption, and their functionalities are limited predominantly by radiative losses. We implement a new physical mechanism for suppressing radiative losses of individual nanoscale resonators to engineer special modes with high quality factors. optical bound states in the continuum (BICs). We demonstrate that an individual subwavelength dielectric resonator hosting a BIC mode can boost nonlinear effects increasing second-harmonic generation efficiency. Our work suggests a route to use subwavelength high-index dielectric resonators for a strong enhancement of light-matter interactions with applications to nonlinear optics, nanoscale lasers, quantum photonics, and sensors.
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