Special Section on Coherent Raman Imaging Techniques and Biomedical Applications

Polarized multiplex coherent anti-Stokes Raman scattering using a picosecond laser and a fiber supercontinuum

[+] Author Affiliations
Sébastien Michel, Hervé Rigneault

Institut Fresnel, Aix-Marseille Université, CNRS, Ecole Centrale Marseille, Campus de Saint Jérôme, F-13397 Marseille cedex 20, France

Antoine Courjaud, Eric Mottay

Amplitude Systemes, 6 allée du doyen Georges Brus 33600 Pessac, France

Christophe Finot

Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 5209 CNRS-Université de Bourgogne, 9 Av. A.Savary, BP 47870, F-21078 Dijon Cedex, France

John Dudley

Laboratoire d’Optique P. M. Duffieux, Institut FEMTO CNRS, 16 route de Gray, 25030 Besançon Cedex, France

J. Biomed. Opt. 16(2), 021108 (February 09, 2011). doi:10.1117/1.3534783
History: Received January 16, 2010; Revised September 10, 2010; Accepted September 15, 2010; Published February 09, 2011; Online February 09, 2011
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We perform multiplex coherent anti-Stokes Raman scattering (CARS) micro-spectroscopy with a picosecond pulsed laser and a broadband supercontinuum (SC) generated in photonic crystal fiber. CARS signal stability is achieved using an active fiber coupler that avoids thermal and mechanical drifts. We obtain multiplex CARS spectra for test liquids in the 600–2000 cm−1 spectral range. In addition we investigate the polarization dependence of the CARS spectra when rotating the pump beam linear polarization state relative to the linearly polarized broad stokes SC. From these polarization measurements we deduce the Raman depolarization ratio, the resonant versus nonresonant contribution, the Raman resonance frequency, and the linewidth.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Sébastien Michel ; Antoine Courjaud ; Eric Mottay ; Christophe Finot ; John Dudley, et al.
"Polarized multiplex coherent anti-Stokes Raman scattering using a picosecond laser and a fiber supercontinuum", J. Biomed. Opt. 16(2), 021108 (February 09, 2011). ; http://dx.doi.org/10.1117/1.3534783


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