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Improvement of Etalon-fringe Immunity in Diode-laser Derivative Spectroscopy

Authors
Publisher
岡山大学工学部
Publication Date
Disciplines
  • Mathematics

Abstract

In a sensitive spectrometry with lead-salt diode lasers, etalon-fringe phenomena often intervene in the measured absorption spectrum. Derivative methods are employed for the purpose of high resolution where the pertaining wavelength is modulated. This paper presents results of mathematical examination on a possible improvement of immunity from the etalon-fringes by choosing the profile of the wavelength modulation.

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