Strange K Alicia, Paul Kelly C, Angel S Michael
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, USA.
Appl Spectrosc. 2017 Feb;71(2):250-257. doi: 10.1177/0003702816654156. Epub 2016 Jul 20.
A spatial heterodyne Raman spectrometer (SHRS) was used to measure transmission Raman spectra of highly scattering compounds. Transmission Raman spectral intensities of ibuprofen were only 2.4 times lower in intensity than backscatter Raman spectra. The throughput was about eight times higher than an f/1.8 dispersive spectrometer, and the width of the area viewed was found to be seven to nine times higher, using 50.8 mm and 250 mm focal length collection lenses. However, the signal-to-noise (S/N) ratio was two times lower for the SHRS than the f/1.8 dispersive spectrometer, apparently due to high levels of stray light.
使用空间外差拉曼光谱仪（SHRS）测量高散射化合物的透射拉曼光谱。布洛芬的透射拉曼光谱强度仅比背散射拉曼光谱低2.4倍。使用50.8毫米和250毫米焦距的收集透镜时，其通量比f/1.8色散光谱仪高约8倍，观察区域的宽度高出7至9倍。然而，SHRS的信噪比是f/1.8色散光谱仪的一半，这显然是由于杂散光水平较高所致。
