Figure 4
From: Time-reversed magnetically controlled perturbation (TRMCP) optical focusing inside scattering media
(a) The optical pattern at the magnetic particle plane between two scattering layers recorded by the CMOS camera when the playback beam illuminates the SLM displayed with a random phase pattern. (b) When the SLM is loaded with the optimized phase pattern, a bright focus is formed with a PBR of 9000. The scalebar represnets 25 μm.
