Oscillator-free atomic clock using a multimode laser

Sin Hyuk Yim; Cho, D.
May 2010
Applied Physics Letters;5/24/2010, Vol. 96 Issue 21, p211119
Academic Journal
We developed an atomic clock using two modes from a single extended-cavity diode laser in multimode operation. The two modes are phase locked with reference to a dispersion signal from a coherent population trapping (CPT) resonance of 85Rb at 3.036 GHz. The design is in principle free from an oscillator and a modulator and it is a significant simplification over a conventional CPT-based atomic clock. Allan deviation of the beat frequency is 1×10-10 at 200 s integration time.


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