NASA SBIR 2019-II Solicitation

Proposal Summary

 19-2- S1.10-3398
 Atomic Interferometry
 Compact and Highly-Sensitive Multi-Axes Gyroscope using Large Momentum Transfer Point Source Atom Interferometry
SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Digital Optics Technologies, Inc.
1645 Hicks Road, Suite H
Rolling Meadows, IL 60008
(847) 358-2592

PRINCIPAL INVESTIGATOR (Name, E-mail, Mail Address, City/State/Zip, Phone)
Dr. Mohamed Fouda
1645 Hicks Road, Suite H
Rolling Meadows, IL 60008 - 1227
(847) 358-2592

BUSINESS OFFICIAL (Name, E-mail, Mail Address, City/State/Zip, Phone)
Mrs. Rabia Shahriar
1645 Hicks Road, Suite H
Rolling Meadows, IL 60008 - 1227
(847) 358-2592

Estimated Technology Readiness Level (TRL) :
Begin: 3
End: 5
Technical Abstract (Limit 2000 characters, approximately 200 words)

Atom interferometry offers the potential to deliver high-performance, compact, and robust gyroscopes that are suitable for inertial navigation.  Critical requirements for such a gyroscope include a high sensitivity to rotations, insensitivity to accelerations, and a simple scheme that is well-suited to miniaturization.  An atomic gyroscope based on the combination of point source interferometry (PSI) and large momentum transfer (LMT) beam splitters is well-suited to meet these requirements.  A conventional PSI is based on the use of cold atoms released from a trap, and subjected to two-photon Raman transitions that act as beam splitters and mirrors for a Mach-Zehnder light-pulse atom interferometer.  In a PSI, the rotation signal is observed by monitoring the fringes develop across the spatial profile of the expanded cloud, and is unaffected by acceleration.  The spacing and the orientation of the fringes are analyzed to determine the components of the rotation vector that are orthogonal to the laser pulses, thus realizing a multi-axes gyroscope.  The sensitivity of a conventional PSI is limited by the relatively small area enclosed, since the conventional Raman pulses produce a momentum separation equivalent to only two photon recoil momenta.  Under the work carried out in Phase I, we have established the feasibility of realizing a PSI that makes use of the technique of large momentum transfer (LMT) based on alternating Raman pulses.  For experimentally feasible parameters, our Phase I work shows that such a gyroscope would be able to achieve a rotation sensitivity of about 2.5 micro-degree/hour per root-Hz.  This sensitivity would be nearly a factor of 50 better that the best atom interferometric gyroscope, which is large and based on atomic beams, demonstrated to date.   The LMT-PSI can be compact, occupying a volume of 10 cm X 10 cm X 10 cm, holding the potential for revolutionary advancement in inertial navigation, for NASA, civilian and military applications.

Potential NASA Applications (Limit 1500 characters, approximately 150 words)


• Improved space vehicle positioning and navigation

• Ultra-precise pointing and platform stabilization for telescopes

• Space vehicle health monitoring

• Tests of general relativity via measurement of gravitational frame dragging effect

Potential Non-NASA Applications (Limit 1500 characters, approximately 150 words)


• Improved positioning and navigation of missiles

• Positioning and navigation for atmospheric and ground vehicles in GPS-denied environments

• Guidance of unmanned underwater vehicles (UUVs)

• Guidance of smart ammunitions

• Advanced laser beam pointing/steering systems

Duration: 24

Form Generated on 05/04/2020 06:28:43