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Optics Letters

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  • Vol. 25, Iss. 12 — Jun. 15, 2000
  • pp: 920–922

Frequency-switched heterodyne cavity ringdown spectroscopy

M. D. Levenson, B. A. Paldus, T. G. Spence, C. C. Harb, R. N. Zare, M. J. Lawrence, and R. L. Byer  »View Author Affiliations


Optics Letters, Vol. 25, Issue 12, pp. 920-922 (2000)
http://dx.doi.org/10.1364/OL.25.000920


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Abstract

When the frequency of light coupled into a cavity is suddenly shifted, the radiation emanating from the input port of the previously excited cavity can beat with the reflection of the frequency-shifted input on the surface of a photodetector. When the beat frequency is stable, the time decay of the resulting optical heterodyne signal can be used to measure intracavity absorption spectra with near quantum-limited sensitivity.

© 2000 Optical Society of America

OCIS Codes
(040.2840) Detectors : Heterodyne
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6310) Spectroscopy : Spectroscopy, heterodyne
(300.6360) Spectroscopy : Spectroscopy, laser

Citation
M. D. Levenson, B. A. Paldus, T. G. Spence, C. C. Harb, R. N. Zare, M. J. Lawrence, and R. L. Byer, "Frequency-switched heterodyne cavity ringdown spectroscopy," Opt. Lett. 25, 920-922 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-12-920


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References

  1. A. O'Keefe and D. A. G. Deacon, Rev. Sci. Instrum. 59, 2544 (1988).
  2. M. D. Levenson, B. A. Paldus, T. G. Spence, C. C. Harb, J. S. Harris, Jr., and R. N. Zare, Chem. Phys. Lett. 290, 335 (1998).
  3. J. Ye, “Ultrasensitive high resolution laser spectroscopy and its application to optical frequency standards,” Ph.D. dissertation (Department of Physics, University of Colorado, Boulder, Colo., 1997), pp. 119–122.
  4. A system in which the output current can be set to correspond to either the sum or the difference of the optical outputs from a 50–50 beam splitter facilitates noise analysis; see B. L. Schumaker, Opt. Lett. 9, 189 (1984).
  5. T. G. Spence, C. C. Harb, B. A. Paldus, R. N. Zare, B. Willke, and R. L. Byer, Rev. Sci. Instrum. 71, 347 (2000).
  6. M. J. Lawrence, B. Willke, M. E. Husman, E. K. Gustafson, and R. L. Byer, J. Opt. Soc. Am. B 16, 523 (1999).

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