  A chirped-pulse quantum control scheme applicable to Coherent Anti-Stokes
Raman Scattering spectroscopy, named as C-CARS, is presented aimed at
maximizing the vibrational coherence in molecules. It implies chirping of three
incoming pulses in the four-wave mixing process of CARS, the pump, the Stokes
and the probe, to fulfil the conditions of adiabatic passage. The scheme is
derived in the framework of rotating wave approximation and adiabatic
elimination of excited state manifold simplifying the four-level model system
into a ``super-effective'' two level system. The robustness, spectral
selectivity and adiabatic nature of this method are helpful in improving the
existing methods of CARS spectroscopy for sensing, imaging and detection. We
also show that the selectivity of excitation of vibrational degrees of freedom
can be controlled by carefully choosing the spectral chirp rate of the pulses.
