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

(full pdf)

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

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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