LOW UNCERTAINTY MEASUREMENTS OF LINE PARAMETERS USING FREQUENCY-STABILIZED CAVITY RING-DOWN SPECTROSCOPY
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Publisher:Ohio State University
We discuss how the frequency-stabilized cavity ring-down spectroscopy (FS-CRDS) method enables high-precision and high-sensitivity measurements of shapes, intensities, as well as broadening and shifting parameters of absorption lines} 73, 012507 2006.}. We illustrate the method's high spectral resolution by observation of sub-MHz wide Doppler-free saturation features in blended near-ir H$_2$O spectra, and we present measurements and models of H$_2$O and O$_2$ spectra that yield line parameters with sub\%-level relative uncertainties.
Author Institution: National Institute of Standards and Technology, Gaithersburg, MD 20899; Nicolaus Copernicus University, Torun, Poland; Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena CA 91125; Jet Propulsion Laboratory, Pasadena, CA 91109
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