期刊
APPLIED SPECTROSCOPY
卷 71, 期 6, 页码 1380-1386出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0003702816681013
关键词
Raman spectroscopy; Fourier transform Raman (FT-Raman); spatial heterodyne Raman spectrometer; SHRS; Fourier transform
资金
- National Science Foundation [CHE-1308211]
- NASA [NNX14AI34G, NNX15AL49H]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1308211] Funding Source: National Science Foundation
- NASA [798791, NNX15AL49H, 682992, NNX14AI34G] Funding Source: Federal RePORTER
This work describes a method of applying the Fourier transform to the two-dimensional Fizeau fringe patterns generated by the spatial heterodyne Raman spectrometer (SHRS), a dispersive interferometer, to correct the effects of certain types of optical alignment errors. In the SHRS, certain types of optical misalignments result in wavelength-dependent and wavelength-independent rotations of the fringe pattern on the detector. We describe here a simple correction technique that can be used in post-processing, by applying the Fourier transform in a row-by-row manner. This allows the user to be more forgiving of fringe alignment and allows for a reduction in the mechanical complexity of the SHRS.
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