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

Sebastien Michel; Hervé Rigneault; Antoine Courjaud; Eric Mottay; Christophe Finot; John M. Dudley

doi:10.1117/1.3534783

1 February 2011 Polarized multiplex coherent anti-Stokes Raman scattering using a picosecond laser and a fiber supercontinuum

Sebastien Michel, Hervé Rigneault, Antoine Courjaud, Eric Mottay, Christophe Finot, John M. Dudley

Author Affiliations +

Journal of Biomedical Optics, Vol. 16, Issue 2, 021108 (February 2011). https://doi.org/10.1117/1.3534783

Abstract

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.

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

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Sebastien Michel, Hervé Rigneault, Antoine Courjaud, Eric Mottay, Christophe Finot, and John M. Dudley "Polarized multiplex coherent anti-Stokes Raman scattering using a picosecond laser and a fiber supercontinuum," Journal of Biomedical Optics 16(2), 021108 (1 February 2011). https://doi.org/10.1117/1.3534783

Published: 1 February 2011

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KEYWORDS

Polarization

Raman spectroscopy

Picosecond phenomena

CARS tomography

Spectroscopy

Liquids

Fiber lasers

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