Multichannel fourier transform spectroscopy using two-dimensional detection of the interferogram and its application to Raman spectroscopy

Satoshi Takahashi, Jeung Sun Ahn, Shuji Asaka, Teizo Kitagawa

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

A system for multichannel Fourier transform spectroscopy was constructed by using a CCD detector and an interferometer consisting of Savart plate held between two polarizers, and practical problems associated with its application to Raman experiments were investigated. The novel idea of the present system lies in avoiding the aliasing distortion, seen in the spectrum measured with a one-dimensional multichannel detector, by arranging the principal axis of the sensitized plane of the CCD detector so that it is not coincident with the direction of the fringe pattern of the interferogram. The observed interferogram suffered geometrical distortion due to incompleteness of the Savart plate. In order to circumvent this problem, an algorithm for correcting this distortion by referring to the interferogram of appropriate monochromatic light was successfully developed. The resolution of a Raman spectrum obtained for indene was ∼40 cm-1, in agreement with the theoretical value expected for this system.

Original languageEnglish
Pages (from-to)863-868
Number of pages6
JournalApplied spectroscopy
Volume47
Issue number7
DOIs
Publication statusPublished - 1993
Externally publishedYes

Keywords

  • CCD detector
  • Multichannel FT Raman

ASJC Scopus subject areas

  • Instrumentation
  • Spectroscopy

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