The Chip-Scale Atomic Clock - Low-Power Physics Package
SYMMETRICOM-TECHNOLOGY REALIZATION CENTER BEVERLY MA
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We have undertaken a development effort to produce a prototype chip-scale atomic clock CSAC. The design goals include short-term stability, with a total power consumption of less than 30 mW and overall device volume 1 cubic cm. The stringent power requirement dominates the physics package architecture, necessarily dictating a small volume gaseous atomic ensemble interrogated by a low-power semiconductor laser. At PTTI 2002 and PTTI 2003, we reported on laboratory experiments that underlie the fundamental architecture of our CSAC, based on interrogation of the cesium D1 transition by the technique of coherent population trapping CPT. In the past year, the development effort has shifted from fundamental research and feasibility investigation to engineering and prototype development. In this paper, we report on the design of a rugged and compact physics package that is expected to exceed the ultimate performance and power requirements of the CSAC.
- Test Facilities, Equipment and Methods