期刊
APPLIED PHYSICS LETTERS
卷 101, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4771124
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资金
- Catalysis for Sustainable Energy Initiative Center
- Danish Ministry of Science, Technology and Innovation
- Danish councils for strategic research funding [09-072118]
- Center for Individual Nanoparticle Functionality (CINF)
- Danish National Research Foundation
We demonstrate a light-extraction approach using a whispering gallery resonators array. The wavelength-scale resonant dielectric nanospheres support whispering gallery modes, which can be coupled with the confined waveguide modes inside the bulk material, thus dramatically improving light extraction. Broadband light-extraction enhancement across the entire visible spectral range is achieved by exciting three low-order and low-quality-factor resonances. As an example, the broadband extraction enhancement of about 50% is obtained for the emission of fluorescent SiC at all the tested angles. The experimental results are supported by numerical simulations. Our light-extraction strategy could enable the manufacturing of high-throughput, nondestructive, and affordable optical coating in a variety of optical devices. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4771124]
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