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arXiv 2409.01289physics.optics
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基于MEMS纯相位光调制器的快速且光高效的波前整形

Fast and light-efficient wavefront shaping with a MEMS phase-only light modulator

José C. A. Rocha, Terry Wright, Unė G Būtaitė, Joel Carpenter, George S. D. Gordon, David B. Phillips

AI总结:

本文测试了一种融合液晶SLM高效率与DMD快速切换的MEMS纯相位光调制器(PLM),演示了任意图案投影、像差校正及1.44 kHz高速多模光纤波前整形,并公开了C++控制软件库。

摘要:

在过去二十年中,空间光调制器(SLMs)彻底改变了我们塑造光场的能力。它们赋予我们对单个光束内数千个自由度进行独立动态控制的能力。在这项工作中,我们测试了一种新型SLM,称为纯相位光调制器(PLM),它融合了液晶SLM的高效率和二进制数字微镜器件(DMD)的快速切换速率。PLM具有二维百万像素微镜阵列。每个微镜的垂直高度可以以4位精度独立调节。在此,我们提供了一个关于PLM操作和校准的简明教程。我们演示了任意图案投影、像差校正以及通过复杂介质控制光传输。我们展示了通过多模光纤进行的高速波前整形——以1.44 kHz扫描超过2000个点。我们公开了我们用C++开发的定制高速PLM控制软件库。由于PLM基于微机电系统(MEMS)技术,它们对偏振不敏感,并且具有与DMD相当的基本切换速率限制——预计在不久的将来可实现高达10 kHz的操作。我们预期PLM将在自适应光学、显微术、光遗传学和量子光学等一系列领域中找到高速光整形应用。

英文摘要:

Over the last two decades, spatial light modulators (SLMs) have revolutionised our ability to shape optical fields. They grant independent dynamic control over thousands of degrees-of-freedom within a single light beam. In this work we test a new type of SLM, known as a phase-only light modulator (PLM), that blends the high efficiency of liquid crystal SLMs with the fast switching rates of binary digital micro-mirror devices (DMDs). A PLM has a 2D mega-pixel array of micro-mirrors. The vertical height of each micro-mirror can be independently adjusted with 4-bit precision. Here we provide a concise tutorial on the operation and calibration of a PLM. We demonstrate arbitrary pattern projection, aberration correction, and control of light transport through complex media. We show high-speed wavefront shaping through a multimode optical fibre -- scanning over 2000 points at 1.44 kHz. We make available our custom high-speed PLM control software library developed in C++. As PLMs are based upon micro-electromechanical system (MEMS) technology, they are polarisation agnostic, and possess fundamental switching rate limitations equivalent to that of DMDs -- with operation at up to 10 kHz anticipated in the near future. We expect PLMs will find high-speed light shaping applications across a range of fields including adaptive optics, microscopy, optogenetics and quantum optics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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