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Simulation of light (λ = 4 μm) back-propagated through a 560-μm-diameter scattering medium consisting of N 2.4-μm-diameter dielectric (n = 1.2) cylinders, where (a) N = 3000, (b) N = 9000, and (c) N = 16356, respectively. Inset-figures: Regardless of N, the back-propagated light converges coherently and reconstructs the original light profile (FWHM peak width ~4 μm as measured along the white dashed line at the center).
