![]() ![]() DIRECT TO PHASE II - Offerors interested in submitting a Direct to Phase II proposal in response to this topic must provide documentation to substantiate that the scientific and technical merit and feasibility described in the Phase I section of this topic has been met and describes the potential commercial applications. Phase I deliverables will include a design review including expected device performance and a report presenting the plans for Phase II. Exhibit the feasibility of the approach through a laboratory demonstration of critical components. Develop a detailed analysis of the predicted performance in a relevant environment accounting for expected environmental fluctuations such as temperature, magnetic field, and vibration fluctuations. It should have a size<1 L, weight<1 kg, and power consumption<5 W. ![]() The chosen work must be compatible with a fractional frequency stability of<10^-12 at 1 second averaging and<5x10^-15 for 1 day of averaging. PHASE I: Develop an initial design and model key elements of the proposed clock. temperature, magnetic field, vibration) in a relevant operating environment. Furthermore, the final device should be robust to environmental fluctuations (e.g. Special attention will need to be focused on reducing the power requirements of the requisite lasers, microwave sources, and local oscillators. 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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