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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 24 — Nov. 19, 2012
  • pp: 26583–26595

Widely tuneable fiber optical parametric amplifier for coherent anti-Stokes Raman scattering microscopy

Mario Chemnitz, Martin Baumgartl, Tobias Meyer, Cesar Jauregui, Benjamin Dietzek, Jürgen Popp, Jens Limpert, and Andreas Tünnermann  »View Author Affiliations

Optics Express, Vol. 20, Issue 24, pp. 26583-26595 (2012)

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We present a narrow-bandwidth, widely tunable fiber laser source for coherent anti-Stokes Raman scattering (CARS) spectro-microscopy. The required, synchronized, two-color pulse trains are generated by optical-parametric amplification in a photonic-crystal fiber (PCF). The four-wave-mixing process in the PCF is pumped by a 140ps, alignment-free fiber laser system, and it is seeded by a tunable continuous-wave laser; hence, a high spectral resolution of up to 1cm−1 is obtained in the CARS process. Since the PCF is pumped close to its zero-dispersion wavelength, a broad parametric gain can be accessed, resulting in a large tuning range for the generated signal and idler wavelengths. CARS spectroscopy and microscopy is demonstrated, probing different molecular vibrational modes within the accessible region between 1200cm−1 and 3800cm−1.

© 2012 OSA

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3600) Lasers and laser optics : Lasers, tunable
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(300.6230) Spectroscopy : Spectroscopy, coherent anti-Stokes Raman scattering

ToC Category:
Lasers and Laser Optics

Original Manuscript: August 17, 2012
Revised Manuscript: October 7, 2012
Manuscript Accepted: October 8, 2012
Published: November 12, 2012

Virtual Issues
Vol. 7, Iss. 12 Virtual Journal for Biomedical Optics

Mario Chemnitz, Martin Baumgartl, Tobias Meyer, Cesar Jauregui, Benjamin Dietzek, Jürgen Popp, Jens Limpert, and Andreas Tünnermann, "Widely tuneable fiber optical parametric amplifier for coherent anti-Stokes Raman scattering microscopy," Opt. Express 20, 26583-26595 (2012)

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