期刊
APPLIED PHYSICS LETTERS
卷 97, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3474623
关键词
-
资金
- Microsystems Technology Laboratory and Center for Materials Science and Engineering at MIT
We have demonstrated a new photonic structure to achieve strong optical coupling between nanoparticle and photonic molecule by utilizing a notched microring resonators. By creating a notch in the ring resonator and putting a nanoparticle inside the notch, large spectral shifts and splittings at nanometer scale can be achieved, compared to only picometer scale observed by fiber tip evanescently coupled to the surface of microsphere, thereby significantly lowered the quality factor requirement for single nanoparticle detection. The ability for sorting the type of nanoparticles due to very different mode shift and splitting behavior of dielectric and metallic nanoparticles is also emphasized. (C) 2010 American Institute of Physics. [doi:10.1063/1.3474623]
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