针对三维光存储串行写入方式存储速度慢、效率低的缺点, 设计了一种飞秒激光并行存储光学系统。该系统以 TI公司的数字微镜器件作为空间光调制器, 对入射飞秒激光进行调制, 并利用微透镜阵列对调制后光束进行分束聚焦, 从而产生可控的多焦点阵列, 实现可控性强、灵活性好的并行加工。本文利用 ZEMAX和 Matlab对 DMD进行了仿真建模, 并根据已有飞秒激光三维光存储系统参数设计出适合本系统的微透镜阵列, 最后对整个系统进行了仿真, 给出了初步的仿真结果。从仿真结果可以看出, 该系统可以实现具有光开关的存储信息的并行写入。

Traditional three-dimensional optical data storage is limited by the defect of inefficiency due to its serial written mode. To overcome this disadvantage, a modified parallel optical data storage system is proposed. This system utilizes Digital Micro mirror Device (DMD) as spatial light modulator, through which the incident light is modulated as designed. In succession, the emergent light is focused respectively by a microlens array, giving rise to a controllable focal spots array. The system is modeled and simulated by ZEMAX and Matlab, and the design of a microlens array based on the parameters of the existing system is also demonstrated. At last, the result of the simulation is presented in this paper, from which the conclusion that this system could realize parallel data storage with optical switch is drawn.