High‐Resolution Fourier Transform Spectrometry of Gases

Abstract

This article mainly focuses on the experimental aspects of high‐resolution Fourier transform spectroscopy (FTS) as applied to molecular gas studies. The main characteristics and peculiarities of Doppler‐limited vibrational spectroscopy of gases and some of the current trends in the technique are discussed using select examples. An introduction to the general appearance of high‐resolution absorption and emission Fourier transform (FT) spectra is given. The specific advantages of the two most common FT recording procedures: the fast‐scanning and the stepping‐mode approaches are discussed. Some of the important scientific results that may be obtained in high‐resolution vibrational spectrometry using FTS are reviewed. Finally, recent developments on selective modulations and time‐resolved FTS are presented. About 300 references (titles included) provide a comprehensive overview of the various aspects of the ongoing applications.

Two-Dimensional Imaging of Water Vapor by Near-Infrared Laser Absorption Spectroscopy

“…A gas-phase sample has also been detected by IR, NIR, and Raman spectroscopy. 5,6 Extractive spectroscopy and open-path spectroscopy enable an atmospheric sample to be measured by IR and NIR spectroscopy. 7,8 However, these techniques cannot detect a 2D image of each chemical distribution.…”