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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 11 — Jun. 3, 2013
  • pp: 13515–13521

Raman optical activity by coherent anti-Stokes Raman scattering spectral interferometry

Kotaro Hiramatsu, Hideaki Kano, and Takashi Nagata  »View Author Affiliations


Optics Express, Vol. 21, Issue 11, pp. 13515-13521 (2013)
http://dx.doi.org/10.1364/OE.21.013515


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Abstract

We demonstrate a method to measure Raman optical activity (ROA) by using coherent anti-Stokes Raman scattering (CARS) spectral interferometry. An extremely weak chirality-induced CARS field is amplified through the interference with a strong CARS field generated from an external reference and is extracted by the Fourier transformation. In this interferometric coherent Raman optical activity (iCROA), both the sign and the magnitude of optical active non-resonant background susceptibility can be directly determined. Measurement of a CARS-ROA spectrum with less artifact is obtained because a broad offset artifact due to optical rotatory dispersion is clearly distinguished in iCROA.

© 2013 osa

OCIS Codes
(300.6230) Spectroscopy : Spectroscopy, coherent anti-Stokes Raman scattering
(300.6310) Spectroscopy : Spectroscopy, heterodyne

ToC Category:
Spectroscopy

History
Original Manuscript: April 10, 2013
Revised Manuscript: May 20, 2013
Manuscript Accepted: May 22, 2013
Published: May 29, 2013

Citation
Kotaro Hiramatsu, Hideaki Kano, and Takashi Nagata, "Raman optical activity by coherent anti-Stokes Raman scattering spectral interferometry," Opt. Express 21, 13515-13521 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-11-13515


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  14. Although the LO term should be written as E2LO(ω)e−iωτcosθin a precise sense, cosθcan be approximated by 1 because θchanges between −0.125° and 0.125° in this study.

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