Abstract：
Raman spectroscopy allows for the unambiguous identification of materials through the inelastic scattering of light. This technique has a great many uses in various aspects of society from academic, scientific, and industry. This paper explores a specific type of Raman spectrometer called a spatial heterodyne Raman spectrometer (SHRSy), which is a variation of an interferometric spectrometer. It utilizes a Michelson interferometer and replaces the mirrors with gratings that transform it from a time-domain spectrometer to a spatial-domain spectrometer, allowing for the entirety of the spectrum to be captured at once. This study specifically tests a half-inch two-grating monolithic SHRS (½-in. 2g-mSHRS), which has a weight of <60 g and a size of 2.2 × 2.2 × 1.3 cm. To do this we excite a variety of organic liquids with a 532 nm neodymium-doped yttrium aluminum garnet (Nd:YAG) pulsed laser, using an excitation energy of 6.5 mJ/pulse and distance of 3 m in conjunction with an intensified charge-coupled device camera. This is the first time that the SHRS has been used for investigating polarized Raman spectra of liquids. We discuss and contrast the instrumental properties such as resolution, spectral range, étendue, and field of view with previously tested mSHRS to give context to the instrument\'s performance.
摘要：
拉曼光谱允许通过光的非弹性散射来明确地识别材料。从学术角度来看，这种技术在社会的各个方面都有很大的用途，科学,和工业。本文探讨了一种特定类型的拉曼光谱仪，称为空间外差拉曼光谱仪（SHRSy），这是干涉光谱仪的一种变体。它利用迈克尔逊干涉仪，并用光栅代替反射镜，将其从时域光谱仪转换为空间域光谱仪，允许一次捕获整个光谱。这项研究专门测试了半英寸的两光栅单片SHRS(1/2英寸。2g-mSHRS)，重量<60克，尺寸为2.2×2.2×1.3厘米。为此，我们使用532nm掺钕钇铝石榴石（Nd：YAG）脉冲激光激发各种有机液体，使用6.5mJ/脉冲的激发能量和3m的距离，并结合增强型电荷耦合器件相机。这是SHRS首次用于研究液体的偏振拉曼光谱。我们讨论和对比仪器属性，如分辨率，光谱范围,étendue,和视野与先前测试的mSHRS提供背景仪器的性能。
