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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 15 — Jul. 20, 2009
  • pp: 12532–12539

Intracavity wavelength modulation of an optical parametric oscillator for coherent Raman microscopy

Brian G. Saar, Gary R. Holtom, Christian W. Freudiger, Chrisita Ackermann, Winfield Hill, and X. Sunney Xie  »View Author Affiliations

Optics Express, Vol. 17, Issue 15, pp. 12532-12539 (2009)

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We present a novel intracavity frequency modulation scheme in a tunable, picosecond optical parametric oscillator (OPO). The OPO signal wavelength can be modulated with a depth of more than 10 nm at a rate of 38 MHz (one half its repetition rate). We discuss the design and construction of the light source and its application to the recently-developed frequency modulation coherent anti-Stokes Raman scattering (FM-CARS) and stimulated Raman scattering (SRS) techniques. The new light source allows for real time subtraction of the interfering background signal in coherent Raman imaging, yielding images with purely chemical contrast.

© 2009 OSA

OCIS Codes
(190.4360) Nonlinear optics : Nonlinear optics, devices
(140.3518) Lasers and laser optics : Lasers, frequency modulated
(180.4315) Microscopy : Nonlinear microscopy

ToC Category:
Nonlinear Optics

Original Manuscript: May 28, 2009
Revised Manuscript: June 29, 2009
Manuscript Accepted: July 2, 2009
Published: July 20, 2009

Virtual Issues
Vol. 4, Iss. 9 Virtual Journal for Biomedical Optics

Brian G. Saar, Gary R. Holtom, Christian W. Freudiger, Chrisita Ackermann, Winfield Hill, and X. Sunney Xie, "Intracavity wavelength modulation of an optical parametric oscillator for coherent Raman microscopy," Opt. Express 17, 12532-12539 (2009)

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