Fig. 4.

Light delivery of various virtual light sources at various frequencies (100 THz to 563 THz) is compared. We simulate TRUE light propagation through a 200-μm-by-300-μm scattering medium consisting of 676 randomly positioned, 5-μm-diameter dielectric (n = 1.2) cylinders. Light delivery from a speckle-like virtual light source is compared to a single, coherent plane wave light source of various widths: w = 0.67 μm, 2 μm, 5, μm, 10 μm, and 20 μm. The root-mean-square (RMS) error of back-propagated light is compared to the original emitted light. Simulation results show insignificant differences for the effectiveness of the speckle-like virtual light source and a coherent, finite-width plane wave virtual light source.