An optimized iterative technique combining the merits of conventional Gerchber-Saxton (G-S) and adaptive-additive (A-A) algorithms to design multilevel computer-generated holograms for the creation of a desirable structured intensity pattern for multiple optical manipulation is theoretically adopted. Optical trap arrays are demonstrated with the help of liquid crystal spatial light modulator and a microscopic optical tweezer system. Additionally, continuous locked-in transport and deflection of microparticles with the generated optical lattice is proven experimentally. The proposed method possesses apparent high efficiency, high uniformity, and dynamic and reconfigurable advantages.
© 2011 Chinese Optics Letters
Jing Bu, Guanghui Yuan, Yuyang Sun, Siwei Zhu, and Xiaocong Yuan, "Optimization of computer-generated holograms for dynamic optical manipulation with uniform structured light spots," Chin. Opt. Lett. 9, 061202- (2011)