期刊
OPTICS EXPRESS
卷 18, 期 6, 页码 6048-6055出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.18.006048
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- U.S. Army Research Office (ARO) MURI [50432PH-MUR]
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. (C) 2010 Optical Society of America
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