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Light scattering within scattering media presents a substantial obstacle tooptical transmission. A speckle pattern with random amplitude and phasedistribution is observed when coherent light travels through strong scatteringmedia. Fortunately, wavefront shaping has been successfully employed with aspatial light modulator to recover intensity targets after scattering media,such as a sharp focus point or specified two-dimensional patterns. There have,however, been few studies that attempted to separately manipulate the amplitudeand phase of the focusing field. In this paper, we propose a feedback-basedwavefront shaping method to generate complex optical fields through scatteringmedium. A reliable phase retrieval approach is introduced to provide thecomplex feedback information, i.e., the amplitude and phase of the focusingfield. Accordingly, in order to modulate the speckle field into a desiredcomplex structured optical field, a multi-objective genetic algorithm is usedto find the best phase map. To demonstrate the proposed method's highperformance, experimental tests have been carried out. High fidelity isdemonstrated in the generation of diverse complex light fields, both inamplitude and phase. Our findings may facilitate the manipulation of lightfield through scattering medium, and are anticipated to further promote futureapplications such as optogenetics, vortex optical communication, and opticaltrapping through scattering media.

High fidelity generation of complex optical field through scattering medium with iterative wavefront optimization