Optical Sciences

Biomolecules and nanostructures

The Optical Sciences group studies the interaction of light and matter. Our current focus is on detection and sensing/imaging with an emphasis on the development of integrated photonics. We are part of Twente University's Department of Science and Technology and member of the MESA+ institute.

 

Heterodyne interferometric polarization coherent anti-Stokes Raman scattering (HIP-CARS) spectroscopy

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K. Orsel, E. T. Garbacik, M. Jurna, J. P. Korterik, C. Otto, J. L. Herek and H. L. Offerhaus
Journal of Raman Spectroscopy
feb. 25, 2010
doi:10.1002/jrs.2621

We demonstrate a new technique that combines polarization sensitivity of the coherent anti-Stokes Raman scattering (CARS)response with heterodyne amplification for background-free detection of CARS signals. In this heterodyne interferometric polarization CARS (HIP-CARS), the major drawbacks of polarization and heterodyne CARS are rectified. Using a home-built picosecond optical parametric oscillator, we are able to address vibrational stretches between 600 and 1650 cm−1 and record continuous high-resolution Raman equivalent HIP-CARS spectra. © 2010 JohnWiley & Sons, Ltd.
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