OSA's Digital Library

Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 1 — Jan. 19, 2007

Pulsed quantum cascade laser-based cavity ring-down spectroscopy for ammonia detection in breath

Jagadeeshwari Manne, Oleksandr Sukhorukov, Wolfgang Jäger, and John Tulip  »View Author Affiliations


Applied Optics, Vol. 45, Issue 36, pp. 9230-9237 (2006)
http://dx.doi.org/10.1364/AO.45.009230


View Full Text Article

Enhanced HTML    Acrobat PDF (1272 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Breath analysis can be a valuable, noninvasive tool for the clinical diagnosis of a number of pathological conditions. The detection of ammonia in exhaled breath is of particular interest for it has been linked to kidney malfunction and peptic ulcers. Pulsed cavity ringdown spectroscopy in the mid-IR region has developed into a sensitive analytical technique for trace gas analysis. A gas analyzer based on a pulsed mid-IR quantum cascade laser operating near 970 cm 1 has been developed for the detection of ammonia levels in breath. We report a sensitivity of 50 parts per billion with a 20 s time resolution for ammonia detection in breath with this system. The challenges and possible solutions for the quantification of ammonia in human breath by the described technique are discussed.

© 2006 Optical Society of America

OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(280.3420) Remote sensing and sensors : Laser sensors
(300.1030) Spectroscopy : Absorption
(300.6340) Spectroscopy : Spectroscopy, infrared

History
Original Manuscript: April 4, 2006
Revised Manuscript: August 16, 2006
Manuscript Accepted: September 1, 2006

Virtual Issues
Vol. 2, Iss. 1 Virtual Journal for Biomedical Optics

Citation
Jagadeeshwari Manne, Oleksandr Sukhorukov, Wolfgang Jäger, and John Tulip, "Pulsed quantum cascade laser-based cavity ring-down spectroscopy for ammonia detection in breath," Appl. Opt. 45, 9230-9237 (2006)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-45-36-9230

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