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.

 

Chemically selective imaging by spectral phase shaping for broadband CARS around 3000 cm−1

(full pdf)

A. C. W. van Rhijn, S. Postma, J. P. Korterik, J. L. Herek, and H. L. Offerhaus
Journal of the Optical Society of America B
vol. 26 issue 3 p559-563, march 2009

Chemically selective microscopy based on broadband coherent anti-Stokes Raman scattering (CARS) is demonstrated on a mixed sample of 4 μm diameter polystyrene (PS) and poly (methyl methacrylate) (PMMA) beads. The CARS signal from the PS or the PMMA beads is enhanced or suppressed, depending on the phase profile applied to the broadband spectrum. Using a combination of negative and positive (sloped) π-phase steps the purely nonresonant background signal is removed.
©2009 Optical Society of America
OCIS codes: 180.4315, 190.7110, 300.6230, 320.5540.
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