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Proceedings Paper

Vibrational phase contrast CARS microscopy for quantitative analysis
Author(s): M. Jurna; E. T. Garbacik; J. P. Korterik; C. Otto; J. L. Herek; H. L. Offerhaus
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Paper Abstract

In biological samples the resonant CARS signal of less abundant constituents can be overwhelmed by the nonresonant background, preventing detection of those molecules. We demonstrate a method to obtain the phase of the oscillators in the focal volume that allows discrimination of those hidden molecules. The phase is measured with respect to the local excitation fields using a cascaded phase-preserving chain. It is measured point-bypoint and takes into account refractive index changes in the sample, phase curvature over the field-of-view and interferometric instabilities. The detection of the phase of the vibrational motion can be regarded as a vibrational extension of the linear (refractive index) phase contrast microscopy introduced by Zernike around 1933.

Paper Details

Date Published: 26 February 2010
PDF: 9 pages
Proc. SPIE 7569, Multiphoton Microscopy in the Biomedical Sciences X, 75690F (26 February 2010); doi: 10.1117/12.840178
Show Author Affiliations
M. Jurna, Univ. Twente (Netherlands)
E. T. Garbacik, Univ. Twente (Netherlands)
J. P. Korterik, Univ. Twente (Netherlands)
C. Otto, Univ. Twente (Netherlands)
J. L. Herek, Univ. Twente (Netherlands)
H. L. Offerhaus, Univ. Twente (Netherlands)

Published in SPIE Proceedings Vol. 7569:
Multiphoton Microscopy in the Biomedical Sciences X
Ammasi Periasamy; Peter T. C. So; Karsten König, Editor(s)

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