  A new scheme of photon echo based quantum memory in the optimal optical QED
cavity with off-resonant Raman atomic transition is proposed. The scheme
employs the atomic ensembles characterized by an optically thin resonant
transition and natural inhomogeneous broadening of the resonant line composed
of the arbitrary narrow homogeneous spectral components. The scheme provides
robust and quite simple coherent control of the light-atoms dynamics that can
be implemented by using an existing optical technique and opens a practical way
for realization of the efficient long-lived multi-mode optical quantum memory.
