DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method and system to measure temperature of gases using coherent anti-stokes doppler spectroscopy

Abstract

A method of measuring a temperature of a noble gas in a chamber includes providing the noble gas in the chamber. The noble gas is characterized by a pressure and a temperature. The method also includes directing a first laser beam into the chamber and directing a second laser beam into the chamber. The first laser beam is characterized by a first frequency and the second laser beam is characterized by a second frequency. The method further includes converting at least a portion of the first laser beam and the second laser beam into a coherent anti-Stokes beam, measuring a Doppler broadening of the coherent anti-Stokes beam, and computing the temperature using the Doppler broadening.

Inventors:
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1111138
Patent Number(s):
8608375
Application Number:
12/905,958
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Rhodes, Mark. Method and system to measure temperature of gases using coherent anti-stokes doppler spectroscopy. United States: N. p., 2013. Web.
Rhodes, Mark. Method and system to measure temperature of gases using coherent anti-stokes doppler spectroscopy. United States.
Rhodes, Mark. Tue . "Method and system to measure temperature of gases using coherent anti-stokes doppler spectroscopy". United States. https://www.osti.gov/servlets/purl/1111138.
@article{osti_1111138,
title = {Method and system to measure temperature of gases using coherent anti-stokes doppler spectroscopy},
author = {Rhodes, Mark},
abstractNote = {A method of measuring a temperature of a noble gas in a chamber includes providing the noble gas in the chamber. The noble gas is characterized by a pressure and a temperature. The method also includes directing a first laser beam into the chamber and directing a second laser beam into the chamber. The first laser beam is characterized by a first frequency and the second laser beam is characterized by a second frequency. The method further includes converting at least a portion of the first laser beam and the second laser beam into a coherent anti-Stokes beam, measuring a Doppler broadening of the coherent anti-Stokes beam, and computing the temperature using the Doppler broadening.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {12}
}

Works referenced in this record:

A Review of the Theory and Application of Coherent Anti-Stokes Raman Spectroscopy (CARS)
journal, July 1977


Vibration-free Raman Doppler velocimeter
patent, November 1986


Laser ignition
patent, January 2004


Photoacoustic rotational raman spectroscopy
patent, June 1981


Photothermal acoustic device
patent, February 1998


Spectroscopic temperature measurement
patent, April 1977


Method and a device for atomic absorption spectroscopy
patent, May 2002


Photothermal acoustic device
patent, December 1997


Raman spectrometer
patent, July 1998