Fig. 6: Reflected beam behavior with regard to the calculation method.
From: Correcting the formalism governing Bloch Surface Waves excited by 3D Gaussian beams
Intensity map of the reflected beam calculated along the Ox axis at 1 mm under the Photonic Crystal (PhC) as a function of the beam waist W0 when simulations are done for a realistic 3D Gaussian beam in a or a prismatic 2D-Gaussian beam in b. c Cross sections made over the two maps for W0 = 6.87 μm showing a real discrepancy between the two oscillation patterns.
