OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 5, Iss. 6 — Jun. 1, 1988
  • pp: 1253–1256

Reduction of residual amplitude modulation in frequency-modulation spectroscopy by using harmonic frequency modulation

Edward A. Whittaker, Chi Man Shum, Haim Grebel, and Haim Lotem  »View Author Affiliations


JOSA B, Vol. 5, Issue 6, pp. 1253-1256 (1988)
http://dx.doi.org/10.1364/JOSAB.5.001253


View Full Text Article

Enhanced HTML    Acrobat PDF (416 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

A new technique to improve the sensitivity of frequency-modulation laser absorption spectroscopy is reported. Theoretical analysis and experimental demonstration show that the application of two harmonically related, appropriately phase-shifted rf waves to the electro-optic modulator can reduce the residual amplitude-modulation background signal in the photodetector output current without reducing the absorption-induced signal. When the new method was used, the residual amplitude-modulation background was reduced by a factor of 4. Our results suggest that shot-noise-limited detection sensitivity may eventually be achieved without using dual-beam compensation or dc-biased modulators.

© 1988 Optical Society of America

History
Original Manuscript: November 12, 1987
Manuscript Accepted: February 23, 1988
Published: June 1, 1988

Citation
Edward A. Whittaker, Haim Grebel, Haim Lotem, and Chi Man Shum, "Reduction of residual amplitude modulation in frequency-modulation spectroscopy by using harmonic frequency modulation," J. Opt. Soc. Am. B 5, 1253-1256 (1988)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-5-6-1253

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