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This movie shows the time evolution of the evenescent part of the mode above a slab PBG nano cavity. For the air-filled half space above (or below) the structure a separation of the electromagnetic field into upward propagating and evanescent (localized) parts can be obtained by two dimensional spatial Fourier transforms. Only the Fourier components lying within the light cone can propagate into the upper far field, the remaining components only contribute to the near field and form the evanescent (inhomogeneous) field. The energy density of the propagating, evanescent and total field along the vertical direction (z) above the center of the structure is shown. Near the structure the evanescent part energetically dominates.

EvanTimeSeries

This movie shows the time evolution of the evenescent part of the mode above a slab PBG nano cavity. For the air-filled half space above (or below) the structure a separation of the electromagnetic field into upward propagating and evanescent (localized) parts can be obtained by two dimensional spatial Fourier transforms. Only the Fourier components lying within the light cone can propagate into the upper far field, the remaining components only contribute to the near field and form the evanescent (inhomogeneous) field. The energy density of the propagating, evanescent and total field along the vertical direction (z) above the center of the structure is shown. Near the structure the evanescent part energetically dominates.


EnergyDensityWithoutQD Main Movie Page / HiQNanoCavityPBG / EvanTimeSeries.png
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FullHiQPBGintroMovie
Movie specs:
4.2MB
MPEG1
640x480
30.000 fps
125.0 kbyte/s