Broadband Magnetometry and Temperature-Sensing with a Light-Trapping Diamond Waveguide

Organization: MIT Lincoln Laboratory
Year: 2016

Consumers pay large sums for diamonds with perfect clarity, cut, color and carat. This technology capitalizes on the diamonds with imperfections or quantum defects. By measuring the spin properties of these defects, the lab can make drift-free precision sensors that are tied to fundamental physical constants. The ultrasensitive, multi-purpose magnetic-field detector and temperature sensor is one thousand times more energy-efficient than previous diamond-based magnetometers. This work makes diamond-based sensing competitive with commercially available sensors (e.g., flux-gate and alakali magnetometers). Diamond-based Broadband Magnetometry and Temperature-Sensing with a Light-Trapping Diamond Waveguide is completely based on fundamental constants, and this sensor will never need calibration, unlike competitors. Furthermore, it will lead to new miniaturized, battery-powered devices for medical and materials imaging, contraband detection and even geological exploration. www.ll.mit.edu

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