Figure 4

Modal characterization of the rotated Hermite-Gaussian (HG) beams which were diffracted from a random aperture.
(a) The first 9 principal components of the rotated HG beam modes, (b) the first 9 principal components of the diffracted HG beam modes from a random aperture and their (c) first and second principal components analysis and color coded for the m and n mode indices of the HG beams and (d) (See Supplementary video file S2) the video includes an animation in which the rotated HG31 beam mode is presented on the left-hand side while on the right-hand side the resulting speckle pattern from its diffraction from the glass diffuser takes place.