在光学传输矩阵的基础上,提出一种基于weighted Gerchberg-Saxton (GSW)算法的迭代聚焦方法。将利用传输矩阵求解调制相位的过程抽象为相位恢复问题,将传输矩阵与均方优化算子作为散射系统变换算子来迭代优化调制相位。通过仿真和实验证明,相比相位共轭法、均方优化算子,所提方法具有更显著的多点聚焦效果,为光场能量调控领域提供了新的思路。

In this paper, we propose an iterative focusing method based on a weighted Gerchberg-Saxton (GSW) algorithm using an optical transmission matrix. The process of solving the modulation phase by using the transfer matrix is abstracted as a phase recovery problem, and the transmission matrix and mean square optimization operator are used as transformation operators of the scattering system to iteratively optimize the modulation phase. Simulations and experiments confirm that the proposed method has a more significant multi-point focusing effect than the phase conjugation method and the mean square optimization operator. The proposed method provides a new idea for light field energy regulation.