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DifferenceCamRotate
This movie shows energy difference in the space above the slab with and without quantum dot. 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. Placing the atom into the cavity, i.e. into the defect of the structure, introduces a significant perturbation, particularly of the propagating field component.
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Movie specs: 7.1MB MPEG1 640x480 30.000 fps 125.0 kbyte/s |