OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 19 — Jul. 1, 2007
  • pp: 3946–3957

In situ measurements of nitric oxide in coal-combustion exhaust using a sensor based on a widely tunable external-cavity GaN diode laser

Thomas N. Anderson, Robert P. Lucht, Soyuz Priyadarsan, Kalyan Annamalai, and Jerald A. Caton  »View Author Affiliations


Applied Optics, Vol. 46, Issue 19, pp. 3946-3957 (2007)
http://dx.doi.org/10.1364/AO.46.003946


View Full Text Article

Enhanced HTML    Acrobat PDF (2424 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

A diode-laser-based sensor has been developed to measure nitric oxide mole fractions using absorption spectroscopy. The sensor is based on sum-frequency mixing of a 395   nm external-cavity diode laser (ECDL) and a 532   nm laser in a beta-barium-borate crystal. Using a new tuning scheme, the GaN ECDL wavelength was modulated over 90   GHz without mode hops. The sensor was applied for measurements of the NO mole fraction in the exhaust of a laboratory-scale, 30   kW t coal-fired boiler burner. Absorption measurements were successfully performed despite severe attenuation by scattering from ash particles in the exhaust stream and on the exhaust-section windows. A detection limit ( 1 σ ) of 4.5 ppm   m / Hz at 700 K was demonstrated in coal- combustion exhaust at a maximum detection rate of 5   Hz .

© 2007 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(140.2020) Lasers and laser optics : Diode lasers
(280.1120) Remote sensing and sensors : Air pollution monitoring
(300.1030) Spectroscopy : Absorption
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(300.6540) Spectroscopy : Spectroscopy, ultraviolet

ToC Category:
Combustion

History
Original Manuscript: October 9, 2006
Revised Manuscript: February 25, 2007
Manuscript Accepted: February 27, 2007
Published: June 12, 2007

Citation
Thomas N. Anderson, Robert P. Lucht, Soyuz Priyadarsan, Kalyan Annamalai, and Jerald A. Caton, "In situ measurements of nitric oxide in coal-combustion exhaust using a sensor based on a widely tunable external-cavity GaN diode laser," Appl. Opt. 46, 3946-3957 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-19-3946

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited