Effect of beam-splitter emission in Fourier-transform emission spectroscopy

Year: 1999

Authors: Carli B., Palchetti L., Raspollini P.

Autors Affiliation: The Istituto di Ricerca sulle Onde Elettromagnetiche “Nello Carrara”, Consiglio Nazionale delle Ricerche, Via Panciatichi 64, Firenze, I-50127, Italy

Abstract: A simple model of an emission Fourier-transform spectrometer is provided for a beam splitter with infinitesimal thickness but with general optical properties otherwise. Using the principle of conservation of energy, we derived the rigorous expressions that relate the interferograms from three different signals source, reference, and beam-splitter emission!, which are simultaneously observed by the detector. The relationship among phase and amplitude of the three interferograms is evaluated. The results indicate that the behavior of a Fourier-transform emission spectrometer may be more complicated than what is assumed in some models. Calibration procedures should reflect the implications of this rigorous approach.

Journal/Review: APPLIED OPTICS

Volume: 38 (36)      Pages from: 7475  to: 7480

KeyWords: MIPAS; FT
DOI: 10.1364/AO.38.007475

Citations: 17
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