Far-field measurement of ultra-small plasmonic mode volume | Zendy

Shuang Zhang | Zendy; Yong-Shik Park | Zendy; Yongmin Liu | Zendy; Thomas Zentgraf | Zendy; Xiang Zhang | Zendy

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Far-field measurement of ultra-small plasmonic mode volume

Author(s) -

Shuang Zhang,

Yong-Shik Park,

Yongmin Liu,

Thomas Zentgraf,

Xiang Zhang

Publication year - 2010

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.18.006048

Subject(s) - near field scanning optical microscope , mode volume , plasmon , optics , electric field , resonator , volume (thermodynamics) , materials science , optical microscope , field (mathematics) , near and far field , whispering gallery wave , optoelectronics , physics , optical fiber , scanning electron microscope , fiber optic sensor , mathematics , quantum mechanics , pure mathematics , graded index fiber

Light-matter interaction can be greatly enhanced in nano-scale plasmonic cavities with tightly confined optical mode, where the mode volume determines the interaction strength. The experimental determination of the mode volume of plasmonic elements is therefore of fundamental importance. Mapping the electric field distribution using near-field scanning optical microscopy (NSOM) may disturb the field distribution hence prevent a reliable measurement of the mode volume. Here, we develop a non-pertubative technique to experimentally determine the mode volume of plasmonic resonators in the far field through a unique optical force method.

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