OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 7 — Jul. 1, 2008
  • pp: 1166–1177

Sub-Doppler dispersion and noise-immune cavity-enhanced optical heterodyne molecular spectroscopy revised

Ove Axner, Weiguang Ma, and Aleksandra Foltynowicz  »View Author Affiliations


JOSA B, Vol. 25, Issue 7, pp. 1166-1177 (2008)
http://dx.doi.org/10.1364/JOSAB.25.001166


View Full Text Article

Enhanced HTML    Acrobat PDF (835 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

An expression for the peak-to-peak sub-Doppler optical phase shift of two counterpropagating modes of light, to which the noise-immune cavity-enhanced optical heterodyne molecular spectroscopy (NICE-OHMS) dispersion signal is proportional, valid for arbitrary degree of saturation, is derived. For low degrees of saturation it agrees with the expression for weakly saturating ( w s ) conditions, [ ( 1 + S ) 1 2 ( 1 + 2 S ) 1 2 ] α 0 2 , where S is the degree of saturation and α 0 is the unsaturated peak absorption. However, the new expression, which can be written as 0.45 S ( 1 + S ) 1 α 0 2 , does not predict a distinct maximum as the w s expression does; instead it predicts an optical phase shift that increases monotonically with S and levels off to 0.45 α 0 2 for large S. This alters the optimum conditions for the sub-Doppler NICE-OHMS technique and improves its shot-noise-limited detectability. The new expression is based upon the same explicit assumptions as the w s expression but not the Kramers–Kronig relations, which are not valid for nonlinear responses, and is supported by experimental results up to S = 100 . The new expression is expected to be valid for all techniques measuring sub-Doppler dispersion signals.

© 2008 Optical Society of America

OCIS Codes
(020.3690) Atomic and molecular physics : Line shapes and shifts
(140.3510) Lasers and laser optics : Lasers, fiber
(260.2030) Physical optics : Dispersion
(300.6310) Spectroscopy : Spectroscopy, heterodyne
(300.6380) Spectroscopy : Spectroscopy, modulation
(300.6460) Spectroscopy : Spectroscopy, saturation

ToC Category:
Spectroscopy

History
Original Manuscript: March 13, 2008
Revised Manuscript: April 29, 2008
Manuscript Accepted: April 30, 2008
Published: June 24, 2008

Citation
Ove Axner, Weiguang Ma, and Aleksandra Foltynowicz, "Sub-Doppler dispersion and noise-immune cavity-enhanced optical heterodyne molecular spectroscopy revised," J. Opt. Soc. Am. B 25, 1166-1177 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-7-1166

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