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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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TL;DR: Fourier Transform Infrared Spectroscopy: Applications to Chemical Systems as discussed by the authors is an application of Fourier transform infrared spectroscopy for chemical systems. But it is not suitable for biomedical applications.
Abstract: Fourier Transform Infrared Spectroscopy: Applications to Chemical Systems Vol 1 Edited by J R Ferraro and L J Basile Pp 311 (Academic: New York, San Francisco and London, 1978) $25; £1625
613 citations
579 citations
TL;DR: FT-IR spectroscopy is used as an effective analytical tool in order to determine extra virgin olive oil adulteration with lower priced vegetable oils and to monitor the oxidation process of corn oil samples undergone during heating or/and exposure to ultraviolet radiation.
529 citations
TL;DR: In this paper, a cavity-enhanced, frequency-comb, Fourier-transform spectroscopy (FTS) was proposed to measure high-resolution spectra in a few tens of microseconds without any need for detector arrays.
Abstract: The sensitivity of molecular fingerprinting is dramatically improved when the absorbing sample is placed in a high-finesse optical cavity, because the effective path length is increased. When the equidistant lines from a laser frequency comb are simultaneously injected into the cavity over a large spectral range, multiple trace gases may be identified1 within a few milliseconds. However, efficient analysis of the light transmitted through the cavity remains challenging. Here, a novel approach—cavity-enhanced, frequency-comb, Fourier-transform spectroscopy—fully overcomes this difficulty and enables measurement of ultrasensitive, broad-bandwidth, high-resolution spectra within a few tens of microseconds without any need for detector arrays, potentially from the terahertz to ultraviolet regions. Within a period of just 18 µs, we recorded the spectra of the ammonia 1.0 µm overtone bands comprising 1,500 spectral elements and spanning 20 nm, with a resolution of 4.5 GHz and a noise equivalent absorption at 1 s averaging of 1 × 10−10 cm−1 Hz−1/2, thus opening a route to time-resolved spectroscopy of rapidly evolving single events. By combining Fourier transform spectroscopy with two frequency-shifted combs and cavity ring-down spectroscopy, scientists demonstrate a powerful new tool for ultrahigh sensitivity spectroscopy. The scheme can measure broadband, high-resolution spectra in tens of microseconds, does not require detector arrays and may allow tuning from terahertz to ultraviolet frequencies.
518 citations