  One of the most widely used chiroptical spectroscopic methods for studying
chiral molecules is Raman optical activity; however, the chiral Raman optical
activity signal is extremely weak. Here, we theoretically examine enhanced
chiral signals in a system with strongly prepared molecular coherence. We show
that the enhanced chiral signal due to strong molecular coherence is up to four
orders of magnitude higher than that of the spontaneous Raman optical activity.
We discuss several advantages of studying the heterodyned signal obtained by
combining the anti-Stokes signal with a local oscillator. The heterodyning
allows direct measurement of the ratio of the chiral and achiral parameters.
Taking advantage of the molecular coherence and heterodyne detection, the
coherent anti-Stokes Raman scattering technique opens up a new potential
application for investigation of biomolecular chirality.
