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Multipolar Diskmodes

Plasmonic nanodisks of suitable diameters show characteristic multipolar eigenmodes that are intuitive to understand. Here we demonstrate, side-by-side in one image, dipolar and quadrupolar modes, which we recorded using our cross-polarized aSNOM approach. (Nano Lett. (2008) 8, 3155-3159.)

Topography Topography
Optical Amplitude (Absolute Magnitude) Optical Amplitude (Absolute Magnitude)
Optical Amplitude (Instantaneous) Optical Amplitude (Instantaneous)
Optical Phase Optical Phase
Phase (MP4)
This movie shows the evolution of the phase of the normal E-field component in time as they are produced by the dipolar or quadrupolar eigenmodes of gold nanodisks. (See also Nano Lett. (2008) 8, p. 3155-3159).
Real Part (MP4)
This movie shows the evolution of the physically relevant real part of the normal E-field component in time as they are produced by the dipolar or quadrupolar eigenmodes of gold nanodisks. (See also Nano Lett. (2008) 8, p. 3155-3159).