  For most passive atomic clocks, the Dick effect is one of the main limits to
reach its frequency stability limitation due to quantum projection noise. In
this paper, we demonstrate that the minimization of the Dick effect for the
Ramsey-CPT atomic clock can be accomplished by interleaving lock. By optimizing
the duty circle of laser pulses, averaging time during detection and optical
intensity of laser beam, the Dick effect induced Allan deviation can be reduced
to the level of 10^-14.
