Polarization dependent cavity ring down spectroscopy

Engeln, Rah Richard; Berden, Giel; Berg, Esther van den; Meijer, Gerard

doi:10.1063/1.474808

Cited by 79 publications

(51 citation statements)

References 26 publications

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“…Recently the range of application of the pulsed CRD technique has been extended with the introduction of many new variants using for instance a fourier transform spectrometer, [Engeln96], polarisation techniques [Engeln97a], a free-electron laser [Engeln97b] or a monolithic folded resonator for evanescent waves [Pipino00].…”

Section: Crds Measurements Have Been Made In Open Airmentioning

confidence: 99%

Incoherent broad-band cavity-enhanced absorption spectroscopy

Fiedler

Hese

Ruth

2003

Chemical Physics Letters

313

258

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Section: Crds Measurements Have Been Made In Open Airmentioning

confidence: 99%

Incoherent broad-band cavity-enhanced absorption spectroscopy

Fiedler

Hese

Ruth

2003

Chemical Physics Letters

313

258

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“…[3][4][5] It is also possible to use CRDS to detect absorption by species at interfaces often using an attenuated total reflection (ATR) configuration. [6][7][8][9][10][11][12] In particular, Pipino, Hudgens, and Huie 8 studied iodine at a silica interface using a variation of CRDS called evanescent wave cavity ring-down spectroscopy (EW-CRDS). The evanescent wave formed during the total internal reflection (TIR) event may interact with molecules present in the medium of lower refractive index, causing a reduction in the reflected light intensity.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Crystal Violet to the Silica−Water Interface Monitored by Evanescent Wave Cavity Ring-Down Spectroscopy

et al. 2003

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Evanescent wave cavity ring-down spectroscopy (EW-CRDS) has been used to investigate the adsorption of crystal violet (CV + ) to a charged silica-water interface as a function of bulk pH by the direct measurement of the absorbance of the CV + chromophore. Absolute absorbances of order 10 -4 have been routinely detected, showing significant variation in the structure of the silica-water interface. At low ionic strength, the interfacial absorbance of CV + shows a monotonic increase with increasing pH. A simple competitive Langmuir adsorption model, which provides values for the silica surface parameters that are in broad agreement with the existing literature values, has been fit to the data. In addition, interfacial absorbance has been monitored as a function of pH for CV + solutions maintained at high ionic strength with NaCl, KCl, and CaCl 2 . As pH increases, the CV + interfacial absorbance exhibits a pronounced maximum, which occurs at pH 8.7 for Na + and K + and at pH 7.9 for Ca 2+ , followed by a sharp decrease. This trend is attributed to competitive binding between the metal cations and CV + to the silica surface binding site, and it has not been observed in previous measurements using second-harmonic generation. The simple Langmuir model, however, does not accurately describe the high ionic strength behavior.

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“…4,5 The extension of CRDS to the condensed matter was first proposed and demonstrated by Engeln et al, 6,7 and was soon followed by others. [8][9][10][11][12] In principle, CRDS is similar to conventional absorption spectroscopy apart from the fact that the sample is placed inside a high finesse optical cavity to enhance the sensitivity of the measurement.…”

mentioning

confidence: 99%