Distribution characteristics of intensity and phase vortices of speckle fields produced by N-pinhole random screens
Liu Man†a),b), Cheng Chuan-Fu‡b), Ren Xiao-Rongb)
       
The local phase probability density distributions (a) N = 4, (b) N = 8, (c) N = 10, (d) N = 12, (e) N = 16, (f) N = 20, (g) a large single ring aperture and (h) a large single circular aperture. The solid lines are theoretical calculations.