Cavity Ring‐Down Spectroscopy in Analytical Chemistry

Sneppen, L. van der; Gooijer, C.; Ubachs, Wim; Ariese, Freek

doi:10.1002/9781444308259.ch4

Cited by 6 publications

(2 citation statements)

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“…HCN is considered as a potential marker for Pseudomonas aeruginosa lung infection. In addition to its application in the field of trace gas detection, the CRDS technology is also widely used in various fields, such as aerosol detection [6], combustion chemical analysis [7], and liquid chromatogram [8].…”

Section: Introductionmentioning

confidence: 99%

Differential Measurement for Cavity Ring-Down Spectroscopy with Dynamic Allan Variance

Wang

et al. 2020

Journal of Spectroscopy

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The method of dynamic Allan variance (DAVAR) is used to analyze the time-varying characteristics of a nonstationary signal and is thus incorporated to evaluate the random error in the cavity ring-down spectroscopy (CRDS) experiments. With the numerical simulation of the influence of instabilities of sudden, slow, or periodic changes on the measurement accuracy in the ring-down process, DAVAR is proved to be an effective way to evaluate random error characteristics in an interfering environment. In order to minimize influences of time-varying noises in CRDS, a practical differential measurement method is proposed, in which wavelength modulation is applied to detect the ring-down times at the absorption peak and the nonabsorption peak in a time-division manner. The validity of the differential measurement is proved with its ability to compensate the influence of the environment changes and improves the accuracy from 0.181 ppm to 0.00914 ppm. The differential measurement method can be used to correct the time-varying error in real time and is helpful to improve the environmental adaptability of the CRDS instrument.

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Section: Introductionmentioning

confidence: 99%

Differential Measurement for Cavity Ring-Down Spectroscopy with Dynamic Allan Variance

Wang

et al. 2020

Journal of Spectroscopy

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“…Promoted by these theoretical and experimental advances, OSD is today of broad interest. Overtone spectroscopy is useful to analytical chemistry, 114,115 used for field detection [116][117][118][119][120] and has been applied to He nanodroplets. 121,122 In addition to supporting reaction dynamics (see some of the review papers previously listed), overtone excitation is also important in atmospheric chemistry, [123][124][125] essential in bond selected chemistry, 15,16 and relevant to laser crystals and glasses.…”

Section: Introductionmentioning

confidence: 99%

Molecular spectroscopy and dynamics: a polyad-based perspective

Herman

Perry

2013

Phys. Chem. Chem. Phys.

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The efficiency and insight of global, polyad-based modeling in overtone spectroscopy and dynamics is demonstrated. Both vibration and vibration-rotation polyads are considered. The spectroscopic implications of polyad Hamiltonians derive from their ability to account for the detailed line positions and intensities of spectral features and their unique predictive power. The dynamical implications of polyad Hamiltonians include classical bifurcations that lead to the birth of new vibrational modes and intramolecular vibrational-rotational energy redistribution over multiple timescales. The literature is reviewed, with emphasis on acetylene results.

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