Abstract

We present a study of coherent anti-Stokes Raman scattering (CARS) under focused beam excitation in a planar Fabry–Perot cavity using an image-dipole formalism. We give a comprehensive description of forward- and backward-CARS signal generation by introducing the expressions of the nonlinear induced polarization in the cavity as a function of their counterpart in free space. We show that the cavity gives rise to a backward-CARS signal and allows working with low numerical aperture collection objectives. We finally discuss the influence of the scatterer position in the cavity on the detected signal.

© 2009 Optical Society of America

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