geom_propagation - propagates wavefront by geometric optical methed.
Propagate the wavefront geometrically. The effect of this propagator is to translate the wavefront along the z axis of its three frame by the distance provided.
f1=begin(0.02,1e-6); f2=circ_ap(f1,0.005); f3=geom_propagation(f2,1); field_plot(f3);
Chen jingyuan, Gan guangyong (IAPCM, Beijing,China.)
fresnel , forward , steps , lens_forvard , near_angular , near_fresnel , far_fraunhoffer , far_fresnel , fraunhoffer_grt , fresnel_grt , propagate ,