Femtosecond spectral phase shaping for CARS spectroscopy and imaging


Postma, Sytse and Rhijn, Alexander C.W. van and Korterik, Jeroen P. and Herek, Jennifer L. and Offerhaus, Herman L. (2009) Femtosecond spectral phase shaping for CARS spectroscopy and imaging. In: P. Corkum & S. Silvestri & K.A. Nelson & E. Riedle & R.W. Schoenlein (Eds.), Ultrafast Phenomena XVI. Springer series in chemical physics, 92 . Springer, pp. 523-525. ISBN 9783540959458

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Abstract:Coherent Anti-Stokes Raman Scattering (CARS) is a third-order non-linear optical process that provides label-free, chemically selective microscopy by probing the internal vibrational structure of molecules. Due to the resonant enhancement of the CARS process, faster imaging is possible compared to Raman microscopy. CARS is unaffected by background fluorescence, but the inherent non-resonant background signal can overwhelm the resonant signal. We demonstrate how simple phase shapes on the pump (and probe) beam reduce the background signal and enhance the resonant signal. We demonstrate chemically selective microscopy using these shaped pulses on plastic beads.
Item Type:Book Section
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/72660
Official URL:http://dx.doi.org/10.1007/978-3-540-95946-5_170
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