Creation and detection of optical modes with spatial light modulators
Creation and detection of optical modes with spatial light modulators
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DOI：
10.1364/aop.8.000200
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发表时间：
2016-06-30
影响因子：
27.1
通讯作者：
McLaren, Melanie
中科院分区：
文献类型：
--
作者：
Forbes, Andrew;Dudley, Angela;McLaren, Melanie
光的模态分解已经知道很久了，主要应用于模式识别。随着液晶器件的商业化，数字全息术作为一种使能工具已变得人人可及，随之而来的是，用于光分解的全数字工具终于成熟了。我们回顾了最近的进展，解开光的性质，从模式结构的激光束的解码存储在轨道角动量（OAM）携带字段的信息。我们展示了这些工具在光纤激光器、固态激光器和在实验室中通过全息激光束成形产生的结构光中的应用。我们展示了如何通过实验实现数字全息图可用于推断强度，相位，波前，坡印亭矢量，偏振，和OAM密度的一些未知的光场。特别是，我们概述了几乎所有以前的ISO标准光束诊断技术可以很容易地用全数字等价物取代，从而铺平了道路，解开光在真实的时间。这些工具与激光系统的原位分析、作为光通信中新兴工具的模分复用以及利用纠缠光子的量子信息处理高度相关。(C)2016美国光学学会
Modal decomposition of light has been known for a long time, applied mostly to pattern recognition. With the commercialization of liquid-crystal devices, digital holography as an enabling tool has become accessible to all, and with it all-digital tools for the decomposition of light have finally come of age. We review recent advances in unravelling the properties of light, from the modal structure of laser beams to decoding the information stored in orbital angular momentum (OAM)-carrying fields. We show application of these tools to fiber lasers, solid-state lasers, and structured light created in the laboratory by holographic laser beam shaping. We show by experimental implementation how digital holograms may be used to infer the intensity, phase, wavefront, Poynting vector, polarization, and OAM density of some unknown optical field. In particular, we outline how virtually all the previous ISO-standard beam diagnostic techniques may be readily replaced with all-digital equivalents, thus paving the way for unravelling of light in real time. Such tools are highly relevant to the in situ analysis of laser systems, to mode division multiplexing as an emerging tool in optical communication, and for quantum information processing with entangled photons. (C) 2016 Optical Society of America