期刊
APPLIED SPECTROSCOPY
卷 71, 期 2, 页码 250-257出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0003702816654156
关键词
Transmission raman spectroscopy; TRS; raman spectroscopy; fourier transform raman; FT Raman; spatial heterodyne raman spectrometer; SHRS; SHS; spatial heterodyne raman
资金
- National Science Foundation [CHE-1308211]
- NASA [NNX14AI34G]
- Research Corporation of the University of Hawaii (RCUH)/NAVSEA/DOD [ZA01339]
- Office of Naval Research [N00014-12-1-0087]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1308211] Funding Source: National Science Foundation
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 50.8mm and 250mm 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.
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