![]() ![]() Alternative strategies will also be considered if sufficiently justified. To achieve these goals, this SBIR will combine aspects of the two extreme clock architectures mentioned above: laser cooling (as used in QuASAR optical clocks) and microwave hyperfine transitions (as used in CSAC). The goal of this SBIR is to bridge the gap between these extremes by developing an atomic frequency standard with long term stability (<5x10^-15 at 1 day), approaching that of laboratory frequency standards such as the NIST F1 microwave Cs fountain clock but with reasonable SWaP values (S<1 L, W<1 kg, P<5 W). However these clocks drift over long timescales making them unsuitable for many applications. DARPA's Chip Scale Atomic Clock (CSAC) program has developed miniature microwave atomic clocks with extremely low SWaP values (S ~ 16 cm^3, W ~ 35 g, P ~ 125 mW) and good short-term stability (10^-10 at 1 sec). OBJECTIVE: Develop a laser-cooled microwave atomic clock with small volume (50 L, W>50 kg, P>150 W). Offerors must choose between submitting a Phase I proposal OR a Direct to Phase II proposal, and may not submit both for the same topic. DARPA will not evaluate the offeror's related Phase II proposal where it determines that the offeror has failed to demonstrate the scientific and technical merit and feasibility of the Phase I project. To be eligible, offerors are required to provide information demonstrating the scientific and technical merit and feasibility of a Phase I project. Please see section 7.0 of the DARPA instructions for additional information. ![]() This topic is eligible for the DARPA Direct to Phase II Pilot Program.
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