Far-field radiation pattern in Coherent Anti-stokes Raman Scattering (CARS) Microscopy
نویسندگان
چکیده
Far field radiation pattern under tight focusing condition is investigated in Coherent Anti-stokes Raman Scattering (CARS) microscopy both in the forward (F-CARS) and backward (E-CARS) directions. While we assume no refraction index mismatch between the sample and the environing medium, our rigorous numerical electromagnetic computation takes into account the exact polarizations of the excitation laser beams and of the induced nonlinear dipoles. F-CARS and E-CARS radiation patterns, as well as their divergence, are studied as a function of the size of the sample object and compared to the excitation beams.
منابع مشابه
Theoretical and experimental characterization of coherent anti-Stokes Raman scattering microscopy
We present a systematic characterization of coherent anti-Stokes Raman scattering (CARS) microscopy. CARS signal generation in a heterogeneous sample under a tight-focusing condition is formulated by the Green’s function method. The CARS radiation pattern and the forwardand backward-detected CARS signals from a three-dimensional Raman scatterer are calculated. The coherent nature of CARS image ...
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