Ultrastable Vapor-cell Atomic Clock Technologies (UVACT) Navy SBIR FY2018.1 Sol No.: Navy SBIR FY2018.1 Topic No.: N181-037 Topic Title: Ultrastable Vapor-cell Atomic Clock Technologies (UVACT) Proposal No.: N181-037-1168 Firm: AOSense, Inc. 415 Oakmead Pkwy Sunnyvale, California 94085 Contact: Brian Patton Phone: (408) 735-9500 Web Site: http://www.aosense.com Abstract: Precise timing underlies much of the modern infrastructure we depend upon to distribute information, energy, and goods. Frequency standards based on Rb vapor cells are widely deployed and have been validated over decades of continuous operation, but suffer from drift which limits their ability to maintain precise timing over long periods. AOsense proposes to research two enabling technologies which would address the largest sources of drift in vapor-cell rubidium clocks. This work will pave the way for the design and demonstration of a low-SWaP atomic clock with instability 1E-12/T^0.5 for 1 s < T < 1E4 s, flicker floor of 1E-14, frequency drift below 1E-11/month, volume < 1 liter, and power draw < 10 W. Benefits: Atomic clocks constitute a commercial market measured in the billions of dollars. These devices span a wide range of size, weight, power, and performance; ranging from chip-scale units to laboratory-sized instruments. Development of a long-term-stable, low-power atomic clock capable of operating on a UAV platform would have ancillary market opportunities in the telecommunications and navigation industries. Return