A quantitative analysis of optical fields is essential, particularly when the light is structured in some desired manner, or when there is perhaps an undesired structure that must be corrected for. A ubiquitous procedure in the optical community is that of optical mode projections—a modal analysis of light—for the unveiling of amplitude and phase information of a light field. When correctly performed, all the salient features of the field can be deduced with high fidelity, including its orbital angular momentum, vectorial properties, wavefront, and Poynting vector. Here, we present a practical tutorial on how to perform an efficient and effective optical modal decomposition, with emphasis on holographic approaches using spatial light modulators, highlighting the care required at each step of the process.

中文翻译：

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使用空间光调制器的结构光的模态分析：实用教程

对光场进行定量分析至关重要，尤其是当光以某种所需的方式构造时，或者在可能存在必须校正的不良结构时，尤其如此。光学界普遍采用的一种程序是光学模式投影，即光的模态分析，用于揭示光场的振幅和相位信息。如果正确执行，则可以以高保真度推断出该场的所有显着特征，包括其轨道角动量，矢量特性，波前和坡印廷矢量。在这里，我们介绍了有关如何执行有效且有效的光学模态分解的实用教程，重点是使用空间光调制器的全息方法，强调了该过程每个步骤所需的护理。