Real-time optical manipulation of particles through turbid media

Tong Peng, Runze Li, Sha An, Xianghua Yu, Meiling Zhou, Chen Bai, Yansheng Liang, Ming Lei, Chunmin Zhang, Baoli Yao, and Peng Zhang

Complex diffusive scattering media pose significant challenges for light focusing as well as optical imaging to be implemented in practice. Recently, it has been demonstrated that the wavefront shaping technique can be applied to realize focusing and imaging through scattering medium. Here we report dynamic optical manipulation of particles through turbid media by employing the interleaved segment wavefront correction method, which is an improved genetic algorithm providing faster convergence speed and higher peak to background ratio. Manipulating micro-beads behind a scattering medium along both one and two dimensional predesigned trajectories in real time has been successfully demonstrated.

DOI