Atomic Triaxial Magnetometer
Navy STTR 2019.A - Topic N19A-T006
NAVSEA - Mr. Dean Putnam - firstname.lastname@example.org
Opens: January 8, 2019 - Closes: February 6, 2019 (8:00 PM ET)
Battlespace, Electronics, Sensors
ACQUISITION PROGRAM: NAVSEA
073, Undersea Technology
OBJECTIVE: Develop a
low-noise prototype triaxial magnetometer by leveraging recent advances in
over the last decade in atomic vapor magnetometers have resulted in room
temperature devices with sensitivities rivaling Superconducting Quantum
Interference Devices (SQUIDs). At the same time, these advances have also
reduced the Size, Weight, and Power (SWaP) of commercially available devices by
an order of magnitude making them a good match for unmanned Navy systems. While
these devices typically readout a scalar magnetic field, other work has
considered methods to create atomic triaxial magnetometers such as: applying
alternating current (ac) signals to scalar magnetometers in one or more vapor
cells, measuring multiple resonance peaks, or using Nitrogen Vacancy (NV)
centers in diamond. Creating a magnetometer that provides accurate vector
readings as well as a scalar field value provides more information from these
sensors thereby minimizing the number of sensors needed for Navy applications.
PHASE I: Design and develop a
concept for an atomic-based triaxial magnetometer. Demonstrate the ability to
measure a vector magnetic field over the dynamic range of ±100 µT in a
bench-top sensor and report the amplitude noise spectral density from 1 mHz to
100 Hz and other requirements provided in the Description. Create models and
simulations that shows the feasibility of the design. Develop a Phase II plan.
The Phase I Option, if exercised, will include the design specifications and
capabilities description to build a prototype solution in Phase II.
PHASE II: Based upon the
Phase I design and the Phase II Statement of Work (SOW), deliver, for testing
and certification, four prototype triaxial magnetometers that will meet the
requirements of the SOW and Description. Demonstrate that the 1 nT accuracy is
independent of orientation with respect to Earth’s background field. Integrate
the device components into a sensor for testing in a simulated operational
environment. Identify components driving the cost and power of the device, and
identify measures that could be implemented to reduce the cost and power. A
Phase III plan will be required to transition.
PHASE III DUAL USE APPLICATIONS:
Assist the Navy with transitioning the technology to Navy use. Ruggedize and
mature the sensor and implement cost-reduction measures to provide a
minimal-cost product for Navy acquisition. The technology is expected to
transition to submarines.
1. Seltzera, S. J. and
Romalis, M. V. “Unshielded three-axis vector operation of a
spin-exchange-relaxation-free atomic magnetometer,” Applied Physics Letters
Vol. 85, No. 20 (2004); http://physics.princeton.edu/romalis/magnetometer/papers/Seltzer%20-%20Vector%20Magnetometer.pdf
2. Yudin, V. I., et al.
“Measurement of the magnetic field vector using multiple electromagnetically
induced transparency resonances in Rb vapor.” Physical Review A 82, 033807
3. Braje, Danielle, et al.
“Broadband Magnetometry and Temperature Sensing with a Light Trapping Diamond
Waveguide.” Nature Physics, 11, 393-397 (2015). https://arxiv.org/abs/1406.5235
4. Wolf, Thomas, et al. “A
Subpicotesla Diamond Magnetometry.” Phys. Rev. X, 5, 041001 (2015).
5. Fang, Kejie, et al.
“High-Sensitivity Magnetometry Based on Quantum Beats in Diamond
Nitrogen-Vacancy Centers.” Phys. Rev. Lett. 110, 130802 (2013). http://adsabs.harvard.edu/abs/2013PhRvL.110m0802F
Atomic Magnetometers; Triaxial; NV Centers in Diamond; Environmental Magnetic
Fields; Orthogonal Magnetic Field Components