Coherent cavity ring down spectroscopy

Meijer, Gerard; Boogaarts, Maarten G. H.; Jongma, Rienk T.; Parker, David H.; Wodtke, Alec M.

doi:10.1016/0009-2614(93)e1361-j

Cited by 169 publications

(104 citation statements)

References 7 publications

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“…10 In the pulsed cavity ringdown technique, first developed by O'Keefe and Deacon in 1987 for the determination of mirror reflectivities, 11 11 Since our first application of the cavity ringdown technique to the study of pulsed molecular beams, 12 several other researchers have employed the technique for various purposes, including gas cell spectroscopy of HCN, 13,14 adaptation to kinetics studies, 15 the spectroscopy of OH in flames, 16 and the detection of CH 3 in a hot filament flow reactor. 17 The Berkeley Cavity Ringdown Laser Absorption Spectrometer and time-of-flight mass spectrometer ͑TOFMS͒ are diagrammed in Fig.…”

Section: A Cavity Ringdown Laser Absorption Spectroscopy (Crlas)mentioning

confidence: 99%

Cavity ringdown laser absorption spectroscopy and time-of-flight mass spectroscopy of jet-cooled gold silicides

Scherer

Paul

Collier

et al. 1995

The Journal of Chemical Physics

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The cavity ringdown technique has been employed for the spectroscopic characterization of the AuSi molecule, which is generated in a pulsed supersonic laser vaporization plasma reactor. Fifteen rovibronic bands have been measured between 340 nm-390 nm, 8 of which have been analyzed to yield molecular properties for the X and D 2 ⌺ states of AuSi. This assignment is in disagreement with previous emission studies of AuSi, which had assigned the ground electronic state as a 2 ⌸ state. A time-of-flight mass spectrometer simultaneously monitors species produced in the molecular beam and has provided evidence for facile formation of polyatomic gold silicides. Comparison of AuSi with our recent results for CuSi and AgSi indicates regular bonding trends for the three coinage metal silicide diatoms.

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Section: A Cavity Ringdown Laser Absorption Spectroscopy (Crlas)mentioning

confidence: 99%

Cavity ringdown laser absorption spectroscopy and time-of-flight mass spectroscopy of jet-cooled gold silicides

Scherer

Paul

Collier

et al. 1995

The Journal of Chemical Physics

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“…This condition is particularly useful for cavity ring-down experiments, as the transmission of the resonator (and therefore the ring-down properties) becomes wavelength independent. This behavior of the resonator was experimentally demonstrated using a typical ring-down configuration for L = 1.15R c (54). In this configuration, all the modes contained in the output of a broadband pulsed laser equally contribute to the ring-down phenomena: This is multimode CRDS.…”

Section: Cavity Ring-down Spectroscopy: Principles and Techniquesmentioning

confidence: 82%

Liquid-Phase and Evanescent-Wave Cavity Ring-Down Spectroscopy in Analytical Chemistry

Sneppen

Ariese

Gooijer

et al. 2009

Annual Rev. Anal. Chem.

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Due to its simplicity, versatility, and straightforward interpretation into absolute concentrations, molecular absorbance detection is widely used in liquidphase analytical chemistry. Because this method is inherently less sensitive than zero-background techniques such as fluorescence detection, alternative, more sensitive measurement principles are being explored. This review discusses one of these: cavity ring-down spectroscopy (CRDS). Advantages of this technique include its long measurement pathlength and its insensitivity to light-source-intensity fluctuations. CRDS is already a wellestablished technique in the gas phase, so we focus on two new modes: liquidphase CRDS and evanescent-wave (EW)-CRDS. Applications of liquidphase CRDS in analytical chemistry focus on improving the sensitivity of absorbance detection in liquid chromatography. Currently, EW-CRDS is still in early stages: It is used to study basic interactions between molecules and silica surfaces. However, in the future this method may be used to develop, for instance, biosensors with high specificity.

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“…At 0, 10, and 15 cm, temperature profiles were obtained from the Abel-inverted line intensities of oxygen (777.3 nm), argon (763.5 nm) and hydrogen (Ha). At each location, the temperatures determined from the three atomic lines were found to agree within 150 K. At 40,50, and 65 cm, the excited state populations of atomic species could not be seen in emission, but the temperatures could still be accurately measured from the temperature sensitive shape of the measured OH A~z + + x~~~ band. This was done by comparing numerical OH spectra [22] at various temperatures normalized to the 309.2 nm peak to the measured line of sight spectra.…”

Section: Air/argon Experimentsmentioning

confidence: 87%

Nonequilibrium in Thermal Plasmas with Applications to Diamond Synthesis

et al. 1997

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-Atmospheric pressure plasmas are frequently considered to be in local thermodynamic equilibrium due to the high frequency of collisional processes which drive the plasma state towards a Maxwell-Boltzmann equilibrium. However, various forms of thermodynamic, ionizational, and chemical nonequilibrium have been demonstrated and investigated in atmospheric pressure plasma environments over the last several years, and the nonequilibrium behavior of such systems can be quite significant. The investigation, understanding, and exploitation of atmospheric pressure nonequilibrium plasma chemistry is necessary to the further expansion of plasma-based systems into mainstream manufacturing and processing applications. Several experimental programs to investigate the fundamental processes of atmospheric pressure nonequilibrium plasma chemistry, and the application of this nonequilibrium to various chemical systems have been undertaken in our laboratories. The results of these investigations have shed light on the kinetics behind various forms of atmospheric pressure nonequilibrium chemistry, and provided insights into the beneficial control of nonequilibrium plasma chemistry for processing applications.

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Coherent cavity ring down spectroscopy

Cited by 169 publications

References 7 publications

Cavity ringdown laser absorption spectroscopy and time-of-flight mass spectroscopy of jet-cooled gold silicides

Cavity ringdown laser absorption spectroscopy and time-of-flight mass spectroscopy of jet-cooled gold silicides

Liquid-Phase and Evanescent-Wave Cavity Ring-Down Spectroscopy in Analytical Chemistry

Nonequilibrium in Thermal Plasmas with Applications to Diamond Synthesis

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