OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 4 — Feb. 1, 2009
  • pp: 743–747

Wavelength modulation waveforms in laser photoacoustic spectroscopy

Jaakko Saarela, Juha Toivonen, Albert Manninen, Tapio Sorvajärvi, and Rolf Hernberg  »View Author Affiliations


Applied Optics, Vol. 48, Issue 4, pp. 743-747 (2009)
http://dx.doi.org/10.1364/AO.48.000743


View Full Text Article

Enhanced HTML    Acrobat PDF (326 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Different wavelength modulation waveforms were studied comprehensively in tunable diode laser photoacoustic spectroscopy. The generation of the photoacoustic signal was studied by way of simulations and experiments. A cantilever-enhanced photoacoustic detector and CO 2 sample gas were used in the experiments. The modulation waveforms compared in this study were sinusoidal, triangular, shaped, and quasi-square waves. All four waveforms allow background-free detection of trace gases. Compared to the conventionally used sinusoidal modulation, the triangular, shaped, and quasi-square waves enhanced the photoacoustic signal by factors of 1.12, 1.42, and 1.57, respectively.

© 2009 Optical Society of America

OCIS Codes
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(300.6380) Spectroscopy : Spectroscopy, modulation
(300.6430) Spectroscopy : Spectroscopy, photothermal

ToC Category:
Spectroscopy

History
Original Manuscript: October 20, 2008
Manuscript Accepted: December 5, 2008
Published: January 23, 2009

Citation
Jaakko Saarela, Juha Toivonen, Albert Manninen, Tapio Sorvajärvi, and Rolf Hernberg, "Wavelength modulation waveforms in laser photoacoustic spectroscopy," Appl. Opt. 48, 743-747 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-4-743

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