Abstract

Frequency-modulation (FM) spectroscopy is known to be a sensitive spectroscopic technique capable of accurately measuring the frequency dependence of the absorption and index of refraction of narrow spectral features. The absorption and index of refraction are coupled by a form of the Kramers–Kronig (K-K) relations, and both components provide information about the spectral feature. In this Letter, we propose a processing technique based on fitting the data to a complex signal model derived from the K-K relation. By using this complex constraint and only processing a single quadrature, our model predicts significant improvement in the minimum detectable absorption compared with conventional FM spectroscopy.

© 2011 Optical Society of America

PDF Article

References

  • View by:
  • |
  • |
  • |

  1. G. C. Bjorklund, M. D. Levenson, W. Lenth, and C. Ortiz, Appl. Phys. B 32, 145 (1983).
    [CrossRef]
  2. F. Devaux, Y. Sorel, and J. Kerdiles, J. Lightwave Technol. 11, 1937 (1993).
    [CrossRef]
  3. J. Goodman, Statistical Optics (Wiley, 2000).
  4. M. Gehrtz, G. C. Bjorklund, and E. A. Whittaker, J. Opt. Soc. Am. B 2, 1510 (1985).
    [CrossRef]

1993

F. Devaux, Y. Sorel, and J. Kerdiles, J. Lightwave Technol. 11, 1937 (1993).
[CrossRef]

1985

1983

G. C. Bjorklund, M. D. Levenson, W. Lenth, and C. Ortiz, Appl. Phys. B 32, 145 (1983).
[CrossRef]

Bjorklund, G. C.

M. Gehrtz, G. C. Bjorklund, and E. A. Whittaker, J. Opt. Soc. Am. B 2, 1510 (1985).
[CrossRef]

G. C. Bjorklund, M. D. Levenson, W. Lenth, and C. Ortiz, Appl. Phys. B 32, 145 (1983).
[CrossRef]

Devaux, F.

F. Devaux, Y. Sorel, and J. Kerdiles, J. Lightwave Technol. 11, 1937 (1993).
[CrossRef]

Gehrtz, M.

Goodman, J.

J. Goodman, Statistical Optics (Wiley, 2000).

Kerdiles, J.

F. Devaux, Y. Sorel, and J. Kerdiles, J. Lightwave Technol. 11, 1937 (1993).
[CrossRef]

Lenth, W.

G. C. Bjorklund, M. D. Levenson, W. Lenth, and C. Ortiz, Appl. Phys. B 32, 145 (1983).
[CrossRef]

Levenson, M. D.

G. C. Bjorklund, M. D. Levenson, W. Lenth, and C. Ortiz, Appl. Phys. B 32, 145 (1983).
[CrossRef]

Ortiz, C.

G. C. Bjorklund, M. D. Levenson, W. Lenth, and C. Ortiz, Appl. Phys. B 32, 145 (1983).
[CrossRef]

Sorel, Y.

F. Devaux, Y. Sorel, and J. Kerdiles, J. Lightwave Technol. 11, 1937 (1993).
[CrossRef]

Whittaker, E. A.

Appl. Phys. B

G. C. Bjorklund, M. D. Levenson, W. Lenth, and C. Ortiz, Appl. Phys. B 32, 145 (1983).
[CrossRef]

J. Lightwave Technol.

F. Devaux, Y. Sorel, and J. Kerdiles, J. Lightwave Technol. 11, 1937 (1993).
[CrossRef]

J. Opt. Soc. Am. B

Other

J. Goodman, Statistical Optics (Wiley, 2000).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Metrics