结合红外折射和衰减全反射光谱学。

IF 2.2 3区 化学 Q2 INSTRUMENTS & INSTRUMENTATION Applied Spectroscopy Pub Date : 2024-10-07 DOI:10.1177/00037028241283050
Thomas G Mayerhöfer, William D P Costa, Jürgen Popp
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引用次数: 0

摘要

我们指定并获得了一种面角为 30°的非传统硒化锌棱镜。这种棱镜的内部入射角从 30°到 48°不等,用户无需更换光学器件或移动或更换样品,即可记录临界角以下的内部反射光谱和临界角以上的衰减全反射 (ATR) 光谱。我们使用 102 个苯甲酸苄酯的光谱演示了它的功能,这些光谱是在不同的入射角用 s 偏振和 p 偏振拍摄的。通过分析亚临界光谱,我们得到了 n∞,这是校正 ATR 光谱的一个关键参数。这些校正光谱随后用于确定所有 ATR 测量的复折射率。平均复折射率函数与通过 ATR 光谱椭偏仪获得的函数显示出极好的一致性。
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Combining Infrared Refraction and Attenuated Total Reflection Spectroscopy.

We have specified and obtained a ZnSe prism with an unconventional face angle cut to 30°. This prism, with internal incidence angles ranging from 30° to 48°, allows users to record internal reflection spectra below the critical angle and attenuated total reflection (ATR) spectra above the critical angle without the need to change optics or move or replace the sample. We demonstrate its capabilities using 102 spectra of benzyl benzoate taken with s- and p-polarization at different angles of incidence. The subcritical spectra were analyzed to obtain n, a key parameter for correcting the ATR spectra. These corrected spectra were subsequently used to determine the complex refractive index for all ATR measurements. The averaged complex refractive index function shows excellent agreement with that obtained through ATR spectroscopic ellipsometry.

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来源期刊
Applied Spectroscopy
Applied Spectroscopy 工程技术-光谱学
CiteScore
6.60
自引率
5.70%
发文量
139
审稿时长
3.5 months
期刊介绍: Applied Spectroscopy is one of the world''s leading spectroscopy journals, publishing high-quality peer-reviewed articles, both fundamental and applied, covering all aspects of spectroscopy. Established in 1951, the journal is owned by the Society for Applied Spectroscopy and is published monthly. The journal is dedicated to fulfilling the mission of the Society to “…advance and disseminate knowledge and information concerning the art and science of spectroscopy and other allied sciences.”
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