Topic
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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TL;DR: In this paper, high-resolution spectra of sulfur dioxide have been recorded between 1055 and 2550 cm −1 using infrared Fourier transform spectroscopy and more than 18 000 recorded lines have been assigned to nine cold and four hot vibration-rotation bands of SO 2.
59 citations
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TL;DR: In this article, a Fourier transform spectral interferometric (FTSI) multiplex coherent anti-Stokes Raman scattering (CARS) technique is developed to extract the vibrational spectrum equivalent to the spontaneous Raman scatter.
Abstract: A novel Fourier transform spectral interferometric (FTSI) multiplex coherent anti-Stokes Raman scattering (CARS) technique is developed to extract the vibrational spectrum equivalent to the spontaneous Raman scattering The conventional FTSI method is modified to use the internal nonresonant CARS signal as a local oscillator to perform spectral interferometry Utilizing the causality of the coherent vibration (ie, there should be no signal before the laser excitation), this new FTSI method recovers the entire complex vibrational spectral parameters We demonstrate this technique with a previously reported single-pulse multiplex CARS method that uses a single phase-controlled broadband ultrafast laser pulse
58 citations
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TL;DR: In this paper, dual-comb spectroscopy is extended to the 6-8 µm wavelength band using femtosecond optical parametric oscillators (OPOs) in order to obtain high-fidelity spectra of H2O and CH4 at approximately 0.3 cm−1 resolutions.
Abstract: The new material orientation patterned gallium phosphide (OPGaP) enables coherent and broadband infrared spectroscopy in the spectral fingerprint region from 6 to 12 µm, accessing the largest molecular absorption cross-sections and permitting sensitive, quantitative and species-specific measurements. Here, we show how dual-comb spectroscopy—a form of high-speed Fourier-transform spectroscopy involving no moving parts and capable of very high resolutions—can be extended to the 6–8 µm wavelength band using femtosecond optical parametric oscillators (OPOs). By acquiring dual-comb interferograms in a time comparable with the mutual decoherence time of the OPO combs we implement cross-correlation-based spectral averaging to obtain high-fidelity spectra of H2O and CH4 at approximately 0.3 cm−1 resolutions from 1285 to 1370 cm−1 and 1500–1585 cm−1.
58 citations
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TL;DR: Differences in the Raman profile for each whey component reflect their intrinsic compositional differences and distinct spatial arrangement, which may be responsible for their diversified behaviors in solubility, rheological and functional properties.
58 citations
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TL;DR: The ultra-high-resolution capabilities of Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) have been demonstrated for accurate mass measurements of complex hydrocarbon mixtures.
Abstract: The ultrahigh-resolution capabilities of Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) have been demonstrated for accurate mass measurements of complex hydrocarbon mixtures. Ultrahigh resolution is achievable over a wide mass range by the use of stored waveform inverse Fourier transform (SWIFT) ejection to eliminate space-charge effects. The mass measurement stability under different ionization conditions eliminates the need of mass reference standards during acquisition of sample spectra, thereby increasing sensitivity of the accurate mass measurements under low-voltage electron ionization conditions. 27 refs., 4 figs., 2 tabs.
58 citations