Carnio B N, Moutanabbir O, Elezzabi A Y
Appl Opt. 2023 Jun 10;62(17):4518-4523. doi: 10.1364/AO.492071.
With the utilization of Fourier-transform infrared (FTIR) spectroscopy for a multitude of commercial applications, a robust methodology for designing, implementing, and servicing these systems in commercial settings is becoming increasingly paramount. Here we present a method allowing for the numerical evaluation of the interferogram signal in a FTIR spectroscopy system, in which the incident electric field can exhibit any arbitrary spectral content. The developed model assesses multiple internal reflections occurring within a beam splitter (BS) and compensating plate (CP), allows for the presence or absence of the CP, and obtains the interferogram in absolute units. The interferogram is evaluated for the representative scenarios of an incident electric field having a blackbody spectral distribution (interacting with a BS and CP composed of ) and a randomly chosen spectral distribution (interacting with a BS composed of ZnSe and no CP).
随着傅里叶变换红外（FTIR）光谱技术在众多商业应用中的广泛使用，一种用于在商业环境中设计、实施和维护这些系统的稳健方法变得越来越重要。在此，我们提出一种方法，可对FTIR光谱系统中的干涉图信号进行数值评估，其中入射电场可呈现任意光谱内容。所开发的模型评估了分束器（BS）和补偿板（CP）内发生的多次内部反射，考虑了CP的有无情况，并以绝对单位获得干涉图。针对具有黑体光谱分布（与由……组成的BS和CP相互作用）的入射电场以及随机选择的光谱分布（与由ZnSe制成且无CP的BS相互作用）的代表性场景对干涉图进行了评估。
