Tool for simulating the focusing of arbitrary vector beams in free-space and stratified media.
Tool for simulating the focusing of arbitrary vector beams in free-space and stratified media.
复制标题
用于模拟自由空间和分层介质中任意矢量光束聚焦的工具。
DOI：
10.1117/1.jbo.23.9.090801
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发表时间：
2018
影响因子：
3.5
通讯作者：
Munro PRT
中科院分区：
文献类型：
--
作者：
Munro PRT
聚焦光束的矢量模型在显微镜、光刻、光学物理和生物医学成像等领域都有重要的应用。这导致了许多模型的开发，计算如何在自由空间和分层介质的存在下，各种轮廓的光束被聚焦。大多数现有的模型开始与矢量衍射公式，通常被称为德拜-沃尔夫积分，必须评估部分解析和部分数值。分析和数值计算的复杂性显着增加时，异国情调的光束建模，或，一个分层介质位于焦点区域。然而，现代的计算资源允许这个积分完全数值计算的大多数应用程序。这使得发展的矢量模型的聚焦，其中的聚焦本身，与分层介质的相互作用，和入射光束规范是独立的，允许前所未有的灵活性的模型。我们概述了该模型的理论，并显示了该模型如何可以用于应用程序，包括光学相干断层扫描，高数值孔径显微镜，和圆柱矢量光束的属性的例子。我们已经免费提供了计算机代码。
Vectorial models of focused beams are important to a variety of fields including microscopy, lithography, optical physics, and biomedical imaging. This has led to many models being developed, which calculate how beams of various profiles are focused both in free space and in the presence of stratified media. The majority of existing models begin with a vectorial diffraction formula, often referred to as the Debye–Wolf integral, which must be evaluated partially analytically and partially numerically. The complexity of both the analytic and numerical evaluations increases significantly when exotic beams are modeled, or, a stratified medium is located in the focal region. However, modern-day computing resources permit this integral to be evaluated entirely numerically for most applications. This allows for the development of a vectorial model of focusing in which the focusing itself, interaction with a stratified medium, and incident beam specification are independent, allowing for a model of unprecedented flexibility. We outline the theory upon which this model is developed and show examples of how the model can be used in applications including optical coherence tomography, high numerical aperture microscopy, and the properties of cylindrical vector beams. We have made the computer code freely available.