Characteristics of plasmonic waveguides and nonlinear metallic particles
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説明
We have measured the propagation distances of wedge plasmons and two-dimensionally localized gap plasmons (GPW) at a vacuum wavelength of 632.8nm. The measured propagation distances of the wedge plasmons increased from 2.2μm to 3.1μm with increasing the wedge tip radius from 20nm to 125nm. The GPW has the measured propagation distance of 8.2μm for a gap width of 100nm and 900nm height. We have developed a finite-difference time-domain (FDTD) method represented by the spherical coordinates which is applicable for numerical calculations of nonlinear optical responses. This FDTD technique gives information about time-dependent spatial distributions of light intensity in nonlinear metallic particles and we can deeply understand nonlinear optical phenomena related with localized surface plasmons in a spherical particle.
収録刊行物
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- SPIE Proceedings
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SPIE Proceedings 6324 632401-, 2006-08-31
SPIE