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US 10,371,856 B1Granted
Zero dead-time gravimeter
AssigneeAOSense, Inc.
InventorsMark A. Kasevich, Miroslav Y. Shverdin
Life of this patent
Estimating the term…
Abstract
An atomic gravimeter device includes one or more lasers and three or more atomic sources. The three or more atomic sources are disposed to launch or drop atoms vertically. The one or more lasers are disposed to generate laser beams that interact with sets of atoms from an atomic source of the three or more atomic sources to measure accelerations of the sets of atoms. A measured value is determined for gravity using interwoven acceleration measurements of the sets of atoms from the three or more atomic sources.
Claims29
An atomic gravimeter device, comprising:
- one or more lasers;
- and
- three or more atomic sources, wherein the three or more atomic sources are disposed to launch or drop atoms vertically, wherein the one or more lasers are disposed to generate laser beams that interact with sets of atoms from an atomic source of the three or more atomic sources to measure accelerations of the sets of atoms, wherein a measured value is determined for gravity using interwoven acceleration measurements of the sets of atoms from the three or more atomic sources, wherein a sequence of three or more laser pulses interrogate each set of atoms from each atomic source of the three or more atomic sources, wherein the three or more laser pulses provided to each atomic source occur in a sequence of a sequence 1 laser pulse, a sequence 2 laser pulse, and sequence 3 laser pulse, each separated by a time T, wherein a start of the sequence for the three or more laser pulses is staggered for the three or more atomic sources.
A method for measuring using an atomic gravimeter device, comprising:
- causing three or more atomic sources to launch or drop atoms vertically;
- and
- causing one or more lasers to generate laser beams that interact with sets of atoms from an atomic source of the three or more atomic sources to measure accelerations of the sets of atoms, wherein a measured value is determined for gravity based on interwoven acceleration measurements of the sets of atoms from the three or more atomic sources, wherein a sequence of three or more laser pulses interrogate each set of atoms from each atomic source of the three or more atomic sources, wherein the three or more laser pulses provided to each atomic source occur in a sequence of a sequence 1 laser pulse, a sequence 2 laser pulse, and sequence 3 laser pulse, each separated by a time T, wherein a start of the sequence for the three or more laser pulses is staggered for the three or more atomic sources.
A computer program product for measuring using an atomic gravimeter device, the computer program product being embodied in a non-transitory computer readable storage medium and comprising computer instructions for:
- causing three or more atomic sources to launch or drop atoms vertically;
- and
- causing one or more lasers to generate laser beams that interact with sets of atoms from an atomic source of the three or more atomic sources to measure accelerations of the sets of atoms, wherein a measured value is determined for gravity based on interwoven acceleration measurements of the sets of atoms from the three or more atomic sources, wherein a sequence of three or more laser pulses interrogate each set of atoms from each atomic source of the three or more atomic sources, wherein the three or more laser pulses provided to each atomic source occur in a sequence of a sequence 1 laser pulse, a sequence 2 laser pulse, and sequence 3 laser pulse, each separated by a time T, wherein a start of the sequence for the three or more laser pulses is staggered for the three or more atomic sources.
An atomic gravimeter device, comprising:
- one or more lasers;
- three or more atomic sources, wherein the three or more atomic sources are disposed to launch or drop atoms vertically, wherein the one or more lasers are disposed to generate laser beams that interact with sets of atoms from an atomic source of the three or more atomic sources to measure accelerations of the sets of atoms, wherein a measured value is determined for gravity using interwoven acceleration measurements of the sets of atoms from the three or more atomic sources;
- and
- a state detector for measuring a quantum state of the set of atoms after interrogating the set of atoms with an interferometer laser pulse sequence, wherein three measurements of the quantum state of the set of atoms comprises a continuous measurement of the acceleration of gravity over a duration of the three measurements of the quantum state of the set of atoms.
1 more element
A method for measuring using an atomic gravimeter device, comprising:
- causing three or more atomic sources to launch or drop atoms vertically;
- causing one or more lasers to generate laser beams that interact with sets of atoms from an atomic source of the three or more atomic sources to measure accelerations of the sets of atoms, wherein a measured value is determined for gravity based on interwoven acceleration measurements of the sets of atoms from the three or more atomic sources;
- and
- causing a state detector to measure a quantum state of the set of atoms after interrogating the set of atoms with an interferometer laser pulse sequence, wherein three measurements of the quantum state of the set of atoms comprises a continuous measurement of the acceleration of gravity over a duration of the three measurements of the quantum state of the set of atoms.
1 more element
A computer program product for measuring using an atomic gravimeter device, the computer program product being embodied in a non-transitory computer readable storage medium and comprising computer instructions for:
- causing three or more atomic sources to launch or drop atoms vertically;
- causing one or more lasers to generate laser beams that interact with sets of atoms from an atomic source of the three or more atomic sources to measure accelerations of the sets of atoms, wherein a measured value is determined for gravity based on interwoven acceleration measurements of the sets of atoms from the three or more atomic sources;
- and
- causing a state detector to measure a quantum state of the set of atoms after interrogating the set of atoms with an interferometer laser pulse sequence, wherein three measurements of the quantum state of the set of atoms comprises a continuous measurement of the acceleration of gravity over a duration of the three measurements of the quantum state of the set of atoms.
1 more element
Dependencies are inferred from the claim text.