Abstract

We present a compact coherent anti-Stokes Raman scattering microscope based on a widely tunable picosecond Er:fiber laser. Intense and bandwidth-limited 1 ps pump pulses at a center wavelength of 775 nm are generated via frequency mixing within the broadband fundamental at 1.55 μm. Narrowband Stokes pulses are obtained by frequency shifting of solitons in a highly nonlinear bulk fiber and subsequent second-harmonic generation. The tuning range from 850 nm to 1100 nm gives access to vibrational resonances between 1150 cm⁻¹ and 3800 cm⁻¹. A first imaging application in the spectral region of CH stretch vibrations is demonstrated.

© 2009 Optical Society of America

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History
Original Manuscript: June 30, 2009
Manuscript Accepted: August 17, 2009
Revised Manuscript: August 7, 2009
Published: September 14, 2009

References

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Author Affiliations

Günther Krauss, Tobias Hanke, Alexander Sell, Daniel Träutlein, Alfred Leitenstorfer, Romedi Selm, Martin Winterhalder, Andreas Zumbusch

University of Konstanz

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