Figure 6. Theoretical modeling of optical near-fields based on angular spectrum representation.

(a) A schematic diagram of a wave vector and polarization vectors for the angular spectrum representation of optical near-fields. For evanescent components, α takes an imaginary number. (b) Orientation of a dipole d⁽ⁱ⁾ and the point of evaluation r. (c) A two-dipole system located in close proximity. The magnitude and the orientation of each dipole is specified by randomly generated numbers.