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Title: Combined raman and IR fiber-based sensor for gas detection

Abstract

A double-pass fiber-optic based spectroscopic gas sensor delivers Raman excitation light and infrared light to a hollow structure, such as a hollow fiber waveguide, that contains a gas sample of interest. A retro-reflector is placed at the end of this hollow structure to send the light back through the waveguide where the light is detected at the same end as the light source. This double pass retro reflector design increases the interaction path length of the light and the gas sample, and also reduces the form factor of the hollow structure.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1135723
Patent Number(s):
8759767
Application Number:
12/545,566
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA); University of South Carolina (Columbia, SC); Georgia Tech Research Corporation (Atlanta, GA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2009 Aug 21
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Carter, Jerry C, Chan, James W, Trebes, James E, Angel, Stanley M, and Mizaikoff, Boris. Combined raman and IR fiber-based sensor for gas detection. United States: N. p., 2014. Web.
Carter, Jerry C, Chan, James W, Trebes, James E, Angel, Stanley M, & Mizaikoff, Boris. Combined raman and IR fiber-based sensor for gas detection. United States.
Carter, Jerry C, Chan, James W, Trebes, James E, Angel, Stanley M, and Mizaikoff, Boris. Tue . "Combined raman and IR fiber-based sensor for gas detection". United States. https://www.osti.gov/servlets/purl/1135723.
@article{osti_1135723,
title = {Combined raman and IR fiber-based sensor for gas detection},
author = {Carter, Jerry C and Chan, James W and Trebes, James E and Angel, Stanley M and Mizaikoff, Boris},
abstractNote = {A double-pass fiber-optic based spectroscopic gas sensor delivers Raman excitation light and infrared light to a hollow structure, such as a hollow fiber waveguide, that contains a gas sample of interest. A retro-reflector is placed at the end of this hollow structure to send the light back through the waveguide where the light is detected at the same end as the light source. This double pass retro reflector design increases the interaction path length of the light and the gas sample, and also reduces the form factor of the hollow structure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {6}
}

Works referenced in this record:

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patent-application, August 2009


Performance of Fiber-Optic Raman Probes for Analysis of Gas Mixtures in Enclosures
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Hollow-waveguide gas sensing with room-temperature quantum cascade lasers
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Review of hollow waveguide technology
conference, May 1995


Methane concentration and isotopic composition measurements with a mid-infrared quantum-cascade laser
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Portable fiber-coupled diode-laser-based sensor for multiple trace gas detection
journal, December 1999


Real-time measurements of trace gases using a compact difference-frequency-based sensor operating at 3.5 μm
journal, September 1998


Detection of formaldehyde using mid-infrared difference-frequency generation
journal, December 1997


Compact laser difference-frequency spectrometer for multicomponent trace gas detection
journal, May 1998


Precise measurement of methane in air using diode-pumped 3.4-μm difference-frequency generation in PPLN
journal, May 1997


Compact mid-infrared trace gas sensor based on difference-frequency generation of two diode lasers in periodically poled LiNbO 3
journal, September 1998


Laser Based Absorption Sensors for Trace Gas Monitoring in a Spacecraft Habitat
conference, July 1999


Room-temperature mid-infrared laser sensor for trace gas detection
journal, January 1997