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Fourier transform spectroscopy

About: Fourier transform spectroscopy is a research topic. Over the lifetime, 5418 publications have been published within this topic receiving 134133 citations.


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Journal ArticleDOI
TL;DR: 2D Fourier transform electronic spectroscopy obtained in the pump-probe geometry using a continuum probe and demonstrates the method on a simple dye system exhibiting vibrational wavepacket dynamics that modulate the peak shapes of the 2D spectra.
Abstract: We report 2D Fourier transform electronic spectroscopy obtained in the pump–probe geometry using a continuum probe. An acousto-optic pulse shaper placed in the pump arm of a standard pump-continuum probe experiment permits 2D spectroscopy that probes a broad spectral range. We demonstrate the method on a simple dye system exhibiting vibrational wavepacket dynamics that modulate the peak shapes of the 2D spectra. The broad spectral range of the continuum probe allows us to observe vibronic cross peaks in the 2D spectra.

88 citations

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the adsorption of CO on Ir(111) with Fourier transform infrared reflection-absorption spectroscopy, temperature programmed desorption, and low-energy electron diffraction.

88 citations

Journal ArticleDOI
TL;DR: In this article, the surface morphology and crystal structure of polycrystalline thin films were investigated using scanning electron microscopy (SEM), AFM, X-ray diffraction, and specular reflectance infrared Fourier transform spectroscopy, respectively.
Abstract: Polycrystalline BaWO4 and PbWO4 thin films having a tetragonal scheelite structure were prepared at different temperatures. Soluble precursors such as barium carbonate, lead acetate trihydrate and tungstic acid, as starting materials, were mixed in aqueous solution. The thin films were deposited on silicon, platinum-coated silicon and quartz substrates by means of the spinning technique. The surface morphology and crystal structure of the thin films were investigated using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction, and specular reflectance infrared Fourier transform spectroscopy, respectively. Nucleation stages and surface morphology evolution of thin films on silicon substrates have been studied by atomic force microscopy. XRD characterization of these films showed that BaWO4 and PbWO4 phase crystallize at 500 � C from an inorganic amorphous phase. FTIR spectra revealed the complete decomposition of the organic ligands at 500 � C and the appearance of two sharp and intense bands between 1000 and 600 cm � 1 assigned to vibrations of the antisymmetric stretches resulting from the high crystallinity of both thin films. The optical properties were also studied. It was found that BaWO4 and PbWO4 thin films have Eg=5.78 eV and 4.20 eV, respectively, of a direct transition nature. The excellent microstructural quality and chemical homogeneity results confirmed that soft solution processing provides an inexpensive and environmentally friendly route for the preparation of BaWO4 and PbWO4 thin films. # 2003 Elsevier Ltd. All rights reserved.

88 citations

Journal ArticleDOI
TL;DR: In this paper, a pulsed multiplex cavity ring down (CRD) spectrometer was proposed for the detection of molecular oxygen using the Fourier transform (FT) spectrum.
Abstract: We present a pulsed multiplex absorption spectrometer in which the sensitivity of the cavity ring down absorption detection technique is combined with the multiplex advantage of a Fourier Transform spectrometer. A description of the Fourier transform cavity ring down (CRD) spectrometer—substantiated with first experimental results on the atmospheric band of molecular oxygen—is given. It is shown that as in the case of normal CRD spectroscopy, the measurement is independent of light intensity fluctuations provided the spectral intensity distribution of the light source is known and is constant during the measurement.

88 citations

Journal ArticleDOI
TL;DR: Two-dimensional ultrafast fourier transform spectroscopy in the deep ultraviolet is demonstrated using an acousto-optic modulator based pulse shaper and measurements on the DNA nucleobase Adenine are presented.
Abstract: We demonstrate two-dimensional ultrafast fourier transform spectroscopy in the deep ultraviolet (~260 nm) using an acousto-optic modulator based pulse shaper. The use of a pulse shaper in the ultraviolet allows for rapid scanning, high phase (time) stability (~0.017 rad) and phase cycling. We present measurements on the DNA nucleobase Adenine.

88 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202334
2022117
202171
202076
2019108
201888