Comparison of the efficiency of laser beam focusing through the scattering medium using 14- and 31-channel bimorph mirrors

摘要

We investigated the ability to focus laser beam (λ= 0.65 nm), propagated through the scattering suspension of polystyrene microspheres in distilled water, by means of two bimorph mirrors. Shack-Hartmann sensor was used to measure the local slopes of the Poynting vector, and the CCD camera was used to measure the intensity of the focal spot in the far-field. Correction efficiency of the two bimorph deformable mirrors - with 14 and 31 control channels - were compared. Numerical and experimental investigation of the focusing improvement of the laser beam propagated through the scattering medium was performed.