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Phase‐shaping strategies for coherent anti‐Stokes Raman scattering
Author(s) -
van Rhijn A. C. W.,
Jurna M.,
Jafarpour A.,
Herek J. L.,
Offerhaus H. L.
Publication year - 2011
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2922
Subject(s) - raman scattering , narrowband , coherent anti stokes raman spectroscopy , pulse shaping , raman spectroscopy , pulse (music) , coherent spectroscopy , excitation , resonance (particle physics) , optics , field (mathematics) , phase (matter) , physics , broadband , scattering , chemistry , atomic physics , laser , quantum mechanics , mathematics , detector , pure mathematics
The identification of large molecules in complex environments requires probing of multiple vibrational resonances rather than a single resonance. Phase‐shaping the excitation pulses allows the coherent mixing of several resonances so that the presence of molecules can be inferred directly from the integrated output pulse energy. This avoids the need for the collection of spectra or multiple measurements. This article describes a particular implementation for coherent anti‐Stokes Raman scattering microscopy that uses a broadband pump and probe field in combination with a narrowband Stokes field. We numerically study the possibilities of optimizing selectivity, specificity, and sensitivity by precalculating pulse shapes using an evolutionary algorithm. Copyright © 2011 John Wiley & Sons, Ltd.