Acoustic resonance phase locked photoacoustic spectrometer
Abstract
A photoacoustic spectroscopy method and apparatus for maintaining an acoustic source frequency on a sample cell resonance frequency comprising: providing an acoustic source to the sample cell to generate a photoacoustic signal, the acoustic source having a source frequency; continuously measuring detection phase of the photoacoustic signal with respect to source frequency or a harmonic thereof; and employing the measured detection phase to provide magnitude and direction for correcting the source frequency to the resonance frequency.
- Inventors:
- Issue Date:
- Research Org.:
- Southwest Sciences, Incorporated, Santa Fe, New Mexico (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1174457
- Patent Number(s):
- 6608683
- Application Number:
- 09/782,137
- Assignee:
- Southwest Sciences, Incorporated
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- FG03-99ER82887
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Pilgrim, Jeffrey S., Bomse, David S., and Silver, Joel A. Acoustic resonance phase locked photoacoustic spectrometer. United States: N. p., 2003.
Web.
Pilgrim, Jeffrey S., Bomse, David S., & Silver, Joel A. Acoustic resonance phase locked photoacoustic spectrometer. United States.
Pilgrim, Jeffrey S., Bomse, David S., and Silver, Joel A. Tue .
"Acoustic resonance phase locked photoacoustic spectrometer". United States. https://www.osti.gov/servlets/purl/1174457.
@article{osti_1174457,
title = {Acoustic resonance phase locked photoacoustic spectrometer},
author = {Pilgrim, Jeffrey S. and Bomse, David S. and Silver, Joel A.},
abstractNote = {A photoacoustic spectroscopy method and apparatus for maintaining an acoustic source frequency on a sample cell resonance frequency comprising: providing an acoustic source to the sample cell to generate a photoacoustic signal, the acoustic source having a source frequency; continuously measuring detection phase of the photoacoustic signal with respect to source frequency or a harmonic thereof; and employing the measured detection phase to provide magnitude and direction for correcting the source frequency to the resonance frequency.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {8}
}
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Works referenced in this record:
New developments in CO2-laser photoacoustic monitoring of trace gases
journal, February 1995
- Thöny, A.; Sigrist, M. W.
- Infrared Physics & Technology, Vol. 36, Issue 2
Design and characterization of a windowless resonant photoacoustic chamber equipped with resonance locking circuitry
journal, March 1991
- Angeli, György Z.; Bozóki, Zoltán; Miklós, András
- Review of Scientific Instruments, Vol. 62, Issue 3