title: Parallel wavefront optimization method for focusing light through random scattering media.
abstract: A parallel wavefront optimization method is demonstrated experimentally to focus light through random scattering media. The simultaneous modulation of multiple phase elements, each at a unique frequency, enables a parallel determination of the optimal wavefront. Compared to a pixel-by-pixel measurement, the reported parallel method uses the target signal in a highly efficient way. With 441 phase elements, a high-quality focus was formed through a glass diffuser with a peak-to-background ratio of ∼270. The accuracy and repeatability of the system were tested through experiments.
authors.affiliation: Janelia Farm Research Campus, Howard Hughes Medical Institute, Ashburn, Virginia 20147, USA. cuim@janelia.hhmi.org
authors.forename: Meng
authors.initials: M
authors.lastname: Cui
mesh_terms: D008027:Light; D055620:Optical Phenomena; D012542:Scattering, Radiation