Improving Spectral Results Using Row-by-Row Fourier Transform of Spatial Heterodyne Raman Spectrometer Interferogram
| Autor: | K. Alicia Strange, S. Michael Angel, Patrick D. Barnett |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Heterodyne business.industry 010401 analytical chemistry Detector Astrophysics::Instrumentation and Methods for Astrophysics 01 natural sciences 0104 chemical sciences 010309 optics Reduction (complexity) symbols.namesake Interferometry Fourier transform Optics 0103 physical sciences symbols Spatial frequency Raman spectroscopy business Instrumentation Diffraction grating Spectroscopy |
| Zdroj: | Applied spectroscopy. 71(6) |
| ISSN: | 1943-3530 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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