A CPT-Based Miniature Atomic Clock Testbed

We present progress on the development of a compact microwave atomic clock testbed based on coherent population trapping interrogation of thermal cesium atoms in a glass vapor cell. The compact clock driving circuitry is designed to be modular and reconfigurable, and includes a physics package, low-noise driving electronics and power supply, mounted entirely inside an enclosure of 270 x 150 x 70 mm.