Wu Liang, Cheng Shubo, Tao Shaohua
School of Physics and Electronics, Central South University, Changsha 410083, China.
Hunan Key Laboratory of Super Microstructure and Ultrafast Process, Central South University, Changsha 410083, China.
Sci Rep. 2015 Oct 21;5:15426. doi: 10.1038/srep15426.
An iterative beam shaping algorithm is proposed to simultaneously shape the amplitude and phase of an optical beam. The proposed algorithm consists of one input plane and two completely overlapped output planes which refer to the output plane in real space. The two output planes are imposed with both amplitude and phase constraints, and the constrained areas in the two output planes are complementary. As a result, both the amplitude and phase in the entire output plane are controllable and arbitrary target complex amplitudes can be achieved with the proposed algorithm. The computing result of the proposed algorithm is a phase-only distribution which can be conveniently realized with a spatial light modulator or a fabricated diffractive optical element. Both simulations and experiments have verified the high performance of the proposed algorithm.
提出了一种迭代光束整形算法，用于同时对光束的幅度和相位进行整形。所提出的算法由一个输入平面和两个完全重叠的输出平面组成，这两个输出平面指的是实空间中的输出平面。在这两个输出平面上施加了幅度和相位约束，并且两个输出平面中的约束区域是互补的。结果，整个输出平面中的幅度和相位都是可控的，并且使用所提出的算法可以实现任意目标复振幅。所提出算法的计算结果是一个纯相位分布，可以方便地用空间光调制器或制造的衍射光学元件来实现。仿真和实验都验证了所提出算法的高性能。
