2000
DOI: 10.1080/014423500750040627
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Cavity ring-down spectroscopy: Experimental schemes and applications

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Cited by 891 publications
(594 citation statements)
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“…25,26 In the current study, CRDS was used to monitor electronically excited H͑n =2͒ atoms and thereby determine their column densities ͑number densities integrated along the line of sight of the laser beam͒ and, from the Stark-broadened lineshapes, the local electron densities. The source of the wavelength-tunable pulsed radiation was a dye laser ͑Spectra Physics PDL3͒ pumped by the 355-nm third harmonic of an Nd: yttrium aluminum garnet ͑YAG͒ laser ͑Continuum Surelite III͒ operating at 10-Hz repetition rate, with laser pulse durations of ϳ8 ns.…”
Section: Cavity Ring-down Spectroscopymentioning
confidence: 99%
See 1 more Smart Citation
“…25,26 In the current study, CRDS was used to monitor electronically excited H͑n =2͒ atoms and thereby determine their column densities ͑number densities integrated along the line of sight of the laser beam͒ and, from the Stark-broadened lineshapes, the local electron densities. The source of the wavelength-tunable pulsed radiation was a dye laser ͑Spectra Physics PDL3͒ pumped by the 355-nm third harmonic of an Nd: yttrium aluminum garnet ͑YAG͒ laser ͑Continuum Surelite III͒ operating at 10-Hz repetition rate, with laser pulse durations of ϳ8 ns.…”
Section: Cavity Ring-down Spectroscopymentioning
confidence: 99%
“…The absorption measurements employ cavity ring-down spectroscopy ͑CRDS͒. 25,26 This noninvasive, multipass laser technique allows determination of radially ͑r͒ averaged absolute H͑n =2͒ atom column densities and, from measurement of the Stark broadening of the Balmer-␤ line, estimates of the local electron density, as a function of distance from the nozzle ͑z͒ and of process conditions ͑e.g., input power, gas mixing ratios, pressure͒. Aspects of the companion modeling have been reported previously, in rationalizing the measured CH and C 2 radical concentrations during diamond CVD in this same reactor.…”
Section: Introductionmentioning
confidence: 99%
“…Typical empty cavity baseline absorption was 53.5 ppm with standard deviation of 0.3 ppm and fractional error of ∼0.6% which is typical for pulsed ringdown applications. 25 The photolysis excimer laser (LPX300, Lambda Physik) was operated at 193 nm, and the beam was shaped by cylindrical and spherical lenses to a rectangle 13×0.5 cm and sent through the photolysis windows into the central part of the flow cell. Background absorption of the precursors and residual water vapor were eliminated by subtraction of data points taken with the excimer laser on and off for each laser step.…”
Section: Near Ir Cavity Ringdown Apparatusmentioning
confidence: 99%
“…A few years later, the CRD technique gained popularity due to its ability of measuring absorption in real time, with highly sensitivity, using pulsed light sources [3]. Nowadays, CRD spectroscopy is widely used for chemical and molecular analysis in real time [4]. This technology quickly gave rise to the development of fiber optic-based CRD schemes, where a fiber loop is used as resonant cavity [5].…”
Section: Introductionmentioning
confidence: 99%