Image formation in CARS and SRS: effect of an inhomogeneous nonresonant background medium

We investigate the role of a spatially inhomogenous nonresonant background medium on several Raman-based imaging modalities. In particular, we consider a small resonant bead submerged in a spatially heterogeneous nonresonant χ(3) background. Using detailed 3D electrodynamic simulations, we compare c...

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Bibliographic Details
Published in:Optics letters 2012-02, Vol.37 (4), p.473-475
Main Authors: Popov, K I, Pegoraro, A F, Stolow, A, Ramunno, L
Format: Article
Language:English
Subjects:
Beads
Cars
Coherent scattering
Computer Simulation
Electrodynamics
Imaging, Three-Dimensional - methods
Microscopy - methods
Raman scattering
Simulation
Spectrum Analysis, Raman - methods
Three dimensional
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Summary:We investigate the role of a spatially inhomogenous nonresonant background medium on several Raman-based imaging modalities. In particular, we consider a small resonant bead submerged in a spatially heterogeneous nonresonant χ(3) background. Using detailed 3D electrodynamic simulations, we compare coherent anti-Stokes Raman scattering (CARS), frequency-modulated CARS, amplitude-modulated stimulated Raman scattering (SRS), and frequency-modulated SRS. We find that only FM-SRS is background-free.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.37.000473