Barnett Patrick D, Strange K Alicia, Angel S Michael
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, USA.
Appl Spectrosc. 2017 Jun;71(6):1380-1386. doi: 10.1177/0003702816681013. Epub 2016 Dec 12.
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.
这项工作描述了一种将傅里叶变换应用于由空间外差拉曼光谱仪（SHRS，一种色散干涉仪）产生的二维斐索条纹图案的方法，以校正某些类型的光学对准误差的影响。在SHRS中，某些类型的光学未对准会导致探测器上条纹图案的波长依赖性和与波长无关的旋转。我们在此描述一种简单的校正技术，可通过逐行应用傅里叶变换在后期处理中使用。这使得用户对条纹对准的要求更低，并降低了SHRS的机械复杂性。
