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Optics Letters

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  • Vol. 29, Iss. 24 — Dec. 15, 2004
  • pp: 2923–2925

Coherent anti-Stokes Raman scattering spectral interferometry: determination of the real and imaginary components of nonlinear susceptibility χ(3) for vibrational microscopy

Conor L. Evans, Eric O. Potma, and X. Sunney Xie  »View Author Affiliations


Optics Letters, Vol. 29, Issue 24, pp. 2923-2925 (2004)
http://dx.doi.org/10.1364/OL.29.002923


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Abstract

We demonstrate coherent anti-Stokes Raman scattering (CARS) heterodyne spectral interferometry for retrieval of the real and imaginary components of the third-order nonlinear susceptibility (χ(3)) of molecular vibrations. Extraction of the imaginary component of χ(3) allows a straightforward reconstruction of the vibrationally resonant signal that is completely free of the electronic nonresonant background and resembles the spontaneous Raman spectrum. Heterodyne detection offers potential for signal amplification and enhanced sensitivity for CARS microscopy.

© 2004 Optical Society of America

OCIS Codes
(110.0180) Imaging systems : Microscopy
(180.3170) Microscopy : Interference microscopy
(300.6230) Spectroscopy : Spectroscopy, coherent anti-Stokes Raman scattering

Citation
Conor L. Evans, Eric O. Potma, and X. Sunney Xie, "Coherent anti-Stokes Raman scattering spectral interferometry: determination of the real and imaginary components of nonlinear susceptibility χ(3) for vibrational microscopy," Opt. Lett. 29, 2923-2925 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-24-2923


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References

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