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Simulated electric intensity distributions of the reflected beams in x-y plane at the focal point ( f = 5 μm) for (a) center position (x = 0, y = 0) and (b) arbitrary position (x = 2 μm, y = 2 μm). The oblique incident beam is RCP light with an incident angle of α = 45°. (c,d) The normalized intensity cross-sections at the focal spot center along the x and y axis for center position (c) and arbitrary position (d). FWHMs of the focal spots are labelled on the plots.
