期刊
OPTICS EXPRESS
卷 19, 期 21, 页码 20233-20243出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.19.020233
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资金
- NSF [CMMI1031331]
- NIST-CNST/UMD-Nanocenter
- Maryland NanoCenter
- Maryland NanoCenter, FabLab
- Maryland NanoCenter, NispLab
- NSF as a MRSEC
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1031331] Funding Source: National Science Foundation
We present experimental demonstration of light superfocusing by using an optical fiber based surface plasmonic (SP) lens with nanoscale concentric annular slits. A far-field, sub-diffraction-limit sized focus was achieved with an optical fiber based device. The performance of SP lenses with three and four annular slits was experimentally characterized. Guidelines and suggestions on designing the SP lens are provided. As a microscale device with nanoscale features, the fiber-based SP lens can provide a solution to bridging nanophotonics and conventional optics. (C) 2011 Optical Society of America
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