期刊
APPLIED PHYSICS LETTERS
卷 104, 期 16, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4872170
关键词
-
资金
- National Science Foundation (NSF) Award [ECCS-1028727]
Dispersive Fourier transform imaging is a powerful technique in achieving ultrafast imaging of wide areas. However, system power efficiency is often limited by dispersive components. Here, we demonstrate that a gap-plasmon metasurface (GPM) based blazed grating can be used in dispersive imaging applications to achieve higher power efficiency than conventional gratings. A sub-wavelength GPM-based grating at telecommunication wavelengths has been designed and fabricated. 75.6% power efficiency with similar to 0.4 degrees/10 nm spatial dispersion has been measured for TE polarized waves at normal incidence. The fabricated device has been tested in a wide area real-time dispersive imaging system and <300 mu m spatial resolution has been demonstrated experimentally. (C) 2014 AIP Publishing LLC.
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