Highly stable chip-scale atomic beam clocks using miniaturized atomic beams and monolithic clock chips

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United States of America

PATENT NO 12160242
SERIAL NO

18197041

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Abstract

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A low-power, chip-scale atomic beam clock is provided that maintains high precision for at least one week at any practical temperature. In some variations, the invention provides a chip-scale atomic beam clock comprising: a micro-optical bench; an atom collimator configured to generate a collimated atomic beam via differential pumping through microchannels; a VCSEL configured to emit laser photons horizontally in the plane of the micro-optical bench; an in-plane lithographically defined diffraction grating configured to split the laser photons into a first photon beam and a second photon beam; in-plane lithographically defined mirrors configured to retroflect the photon beams; in-plane photodetectors configured to detect the photon beams after being retroflected, wherein the first photon beam and the second photon beam interrogate the collimated atomic beam in-plane with the micro-optical bench. The chip-scale atomic beam clocks is capable of maintaining precise positioning, navigation, and timing in case of GPS denial or failure.

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Patent Owner(s)

Patent OwnerAddress
HRL LABORATORIES LLC3011 MALIBU CANYON ROAD MALIBU CA 90265-4799

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Autry, Travis Calabasas, US 3 0
Perahia, Raviv Agoura Hills, US 50 200

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