  We demonstrate, for the first time, Ramsey CPT spectroscopy with a miniature
electro-optical bench associated to a dual-frequency generator based on
combined optical injection locking and optical phase locking techniques
Preliminary results show Ramsey CPT resonance with a contrast of 2% at the
Cesium D2 line. Frequency difference locking loops lead to a contribution of
Dick effect to fractional frequency stability lower than 1.7x10-13 at 1 s, in
line with targeted clock stability of 5x10-13 at 1 s.
