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Title: Backscatter absorption gas imaging systems and light sources therefore

Abstract

The location of gases that are not visible to the unaided human eye can be determined using tuned light sources that spectroscopically probe the gases and cameras that can provide images corresponding to the absorption of the gases. The present invention is a light source for a backscatter absorption gas imaging (BAGI) system, and a light source incorporating the light source, that can be used to remotely detect and produce images of "invisible" gases. The inventive light source has a light producing element, an optical amplifier, and an optical parametric oscillator to generate wavelength tunable light in the IR. By using a multi-mode light source and an amplifier that operates using 915 nm pump sources, the power consumption of the light source is reduced to a level that can be operated by batteries for long periods of time. In addition, the light source is tunable over the absorption bands of many hydrocarbons, making it useful for detecting hazardous gases.

Inventors:
 [1];  [2];  [3];  [4];  [1]
  1. Livermore, CA
  2. San Ramon, CA
  3. Oakley, CA
  4. Campbell, NY
Issue Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
907742
Patent Number(s):
7151787
Application Number:
10/658,906
Assignee:
Sandia National Laboratories (Livermore, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G01 - MEASURING G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Kulp, Thomas Jan, Kliner, Dahv A. V., Sommers, Ricky, Goers, Uta-Barbara, and Armstrong, Karla M. Backscatter absorption gas imaging systems and light sources therefore. United States: N. p., 2006. Web.
Kulp, Thomas Jan, Kliner, Dahv A. V., Sommers, Ricky, Goers, Uta-Barbara, & Armstrong, Karla M. Backscatter absorption gas imaging systems and light sources therefore. United States.
Kulp, Thomas Jan, Kliner, Dahv A. V., Sommers, Ricky, Goers, Uta-Barbara, and Armstrong, Karla M. Tue . "Backscatter absorption gas imaging systems and light sources therefore". United States. https://www.osti.gov/servlets/purl/907742.
@article{osti_907742,
title = {Backscatter absorption gas imaging systems and light sources therefore},
author = {Kulp, Thomas Jan and Kliner, Dahv A. V. and Sommers, Ricky and Goers, Uta-Barbara and Armstrong, Karla M},
abstractNote = {The location of gases that are not visible to the unaided human eye can be determined using tuned light sources that spectroscopically probe the gases and cameras that can provide images corresponding to the absorption of the gases. The present invention is a light source for a backscatter absorption gas imaging (BAGI) system, and a light source incorporating the light source, that can be used to remotely detect and produce images of "invisible" gases. The inventive light source has a light producing element, an optical amplifier, and an optical parametric oscillator to generate wavelength tunable light in the IR. By using a multi-mode light source and an amplifier that operates using 915 nm pump sources, the power consumption of the light source is reduced to a level that can be operated by batteries for long periods of time. In addition, the light source is tunable over the absorption bands of many hydrocarbons, making it useful for detecting hazardous gases.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {12}
}

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Works referenced in this record:

Limitations of signal averaging due to temporal correlation in laser remote-sensing measurements
journal, January 1982


93% pump depletion, 35-W continuous-wave, singly resonant optical parametric oscillator
journal, January 1996


Real-time monitoring of ethane in human breath using mid-infrared cavity leak-out spectroscopy
journal, June 2001


Broadly tunable, mode-hop-tuned cw optical parametric oscillator based on periodically poled lithium niobate
journal, January 2001


Development of a compact gas imaging sensor employing a cw fiber-amp-pumped PPLN OPO
conference, January 2001

  • Goers, U. -B.; Armstrong, K.; Sommers, R.
  • CLEO 2001. Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Technical Digest, Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Technical Digest (IEEE Cat. No.01CH37170)
  • https://doi.org/10.1109/CLEO.2001.948121

Backscatter absorption gas imaging: a new technique for gas visualization
journal, January 1993


Development of a pulsed backscatter-absorption gas-imaging system and its application to the visualization of natural gas leaks
journal, January 1998


Yb Fiber Laser Pumped Mid-IR Source Based on Difference Frequency Generation and Its Application to Ammonia Detection
journal, February 2001


Portable fiber-coupled diode-laser-based sensor for multiple trace gas detection
journal, December 1999


Pulse averaging methods for a laser remote monitoring system using atmospheric backscatter
journal, January 1987