T
Thomas G. Spence
Researcher at Loyola University New Orleans
Publications - 29
Citations - 2251
Thomas G. Spence is an academic researcher from Loyola University New Orleans. The author has contributed to research in topics: Cavity ring-down spectroscopy & Spectroscopy. The author has an hindex of 17, co-authored 29 publications receiving 2107 citations. Previous affiliations of Thomas G. Spence include Vanderbilt University & Stanford University.
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Journal ArticleDOI
Optical diagnostics of atmospheric pressure air plasmas
TL;DR: In this paper, the authors present diagnostic techniques based on optical emission spectroscopy and cavity ring-down Spectroscopy for atmospheric pressure plasmas under conditions ranging from thermal and chemical equilibrium to thermochemical nonequilibrium.
Journal ArticleDOI
Stable isotope ratios using cavity ring-down spectroscopy: determination of 13C/12C for carbon dioxide in human breath.
Eric R. Crosson,Kenneth N. Ricci,Bruce A. Richman,Frank C. Chilese,Thomas Owano,Robert Provencal,Michael W. Todd,Jessica Glasser,and Alex A. Kachanov,Barbara A. Paldus,Thomas G. Spence,Richard N. Zare +11 more
TL;DR: The ability of the instrument to obtain delta13C values in breath samples with sufficient precision to serve as a useful medical diagnostic is demonstrated.
PatentDOI
Cavity-locked ring down spectroscopy
TL;DR: In this article, distinct locking and sampling light beams are used in a cavity ringdown spectroscopy (CRDS) system to perform multiple ringdown measurements while the laser and ring-down cavity are continuously locked.
Journal ArticleDOI
Photoacoustic spectroscopy using quantum-cascade lasers
Barbara A. Paldus,Thomas G. Spence,Richard N. Zare,Jos Oomens,Frans J. M. Harren,David H. Parker,Claire F. Gmachl,F. Cappasso,Deborah L. Sivco,James N. Baillargeon,Albert L. Hutchinson,Alfred Y. Cho +11 more
TL;DR: Photoacoustic spectra of ammonia and water vapor were recorded by use of a continuous-wave quantum-cascade distributed-feedback (QC-DFB) laser at 8.5 mum with a 16-mW power output to permit real-time concentration measurements.
Journal ArticleDOI
A laser-locked cavity ring-down spectrometer employing an analog detection scheme
Thomas G. Spence,Charles C. Harb,Barbara A. Paldus,Richard N. Zare,Benno Willke,Robert L. Byer +5 more
TL;DR: In this article, a diode-pumped Nd:YAG continuous-wave laser source servolocked to a three-mirror optical cavity and an analog detection circuit that extracts the ringdown rate from the exponentially decaying ring-down waveform was described.