Detection and Correction of Linear Phase Error for Fourier Transform Spectrometer Using Phase Correction Method

Abstract:

Idealy, an interferogram is an even function of the path differences; it suffices to computer the cosine Fourier transform of the interferogram from the zero optical path to the max to produce the spectrum. However, the interferogram is always asymmetry of the scanning function in reality. A method for the phase correction of interferograms in Fourier transform is presented. It is shown that phase error can be canceled to within an arbitrary angular precision by phase correction method. Three original spectrums are provided in which phase correction over a frequency range of 400nm to 1000nm ,they are shown that using Phase Correction Method resulted in a error is less than those of the Mertz Method, and the purchased time is much less than the Mertz Method. The method can be used in most experiments, including emission spectroscopy, where conventional techniques are inadequate.

• Periodical: Advanced Materials Research (Volumes 225-226)
• Pages: 293-296
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.225-226.293
• Online since: April 2011
• Authors: Cai Ling Wang, Yu Shan Li, Xue Bin Liu, Bing Liang Hu, Cai Fang Liu
• Keywords: Fourier Transform Spectrometer, Mertz Method, Phase Correction, Phase Correlation

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