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Optics Letters

Optics Letters


  • Vol. 25, Iss. 5 — Mar. 1, 2000
  • pp: 350–352

Saturated-absorption spectroscopy with low-power difference-frequency radiation

D. Mazzotti, P. De Natale, G. Giusfredi, C. Fort, J. A. Mitchell, and L. Hollberg  »View Author Affiliations

Optics Letters, Vol. 25, Issue 5, pp. 350-352 (2000)

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We report high-resolution saturated-absorption spectra recorded by use of a few microwatts of radiation generated in a single pass by difference-frequency mixing. These results were obtained without the use of buildup cavities for the nonlinear mixing or for the saturation spectroscopy. We show high-quality saturated-absorption signals for the fundamental rovibrational band of CO2 near 4.3 μm. Convenient sources and frequency-conversion devices open new possibilities for sub-Doppler spectroscopy in the infrared.

© 2000 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(300.6340) Spectroscopy : Spectroscopy, infrared
(300.6390) Spectroscopy : Spectroscopy, molecular
(300.6460) Spectroscopy : Spectroscopy, saturation

D. Mazzotti, P. De Natale, G. Giusfredi, C. Fort, J. A. Mitchell, and L. Hollberg, "Saturated-absorption spectroscopy with low-power difference-frequency radiation," Opt. Lett. 25, 350-352 (2000)

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