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公开(公告)号：US10444016B1
公开(公告)日：2019-10-15
申请号：US16019042
申请日：2018-06-26
Applicant: AOSense, Inc.
Inventor： Mark A. Kasevich , Michael R. Matthews , Micah Ledbetter , Ying-Ju Wang , Martin M. Boyd
Abstract: A system for an atomic interferometer includes a laser control system and a feedback control system. The laser control system controls a first pointing angle of a first interrogating laser beam. The first interrogating laser beam and a second interrogating laser beam interrogate a pair of almost counter-propagating laser cooled atomic ensembles. The feedback control system adjusts the first pointing angle based at least in part on an inertial measurement using the atomic interferometer to bias an output of the atomic interferometer to compensate for the effects of rotations. The pointing angle of the laser beam, which is linearly related to a frequency used to drive an acousto-optic deflector, is linearly related to the rotation rate of the sensor.
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Patent Agency Ranking
公开(公告)号：US20250020446A1
公开(公告)日：2025-01-16
申请号：US18883434
申请日：2024-10-04
Applicant: AOSense, Inc.
Inventor： Miroslav Y. Shverdin , Matthew Todd Cashen , Micah P. Ledbetter , Michael R. Matthews , Alexander F. Sugarbaker
Abstract: A system for atom interferometry includes one laser configured to generate an output beam; an acousto-optic deflector disposed to generate two diffracted beams that are spatially offset with identical polarizations; and a birefringent crystal disposed to receive the two diffracted beams, where one of the two diffracted beams is passed through a half wave plate so that the two diffracted beams have orthogonal polarizations, where the birefringent crystal further disposed and selected in size to enable the two diffracted beams to re-overlap upon exiting the birefringent crystal by having one of the two diffracted beams walk toward the other of the two diffracted beams in the birefringent crystal, where the two diffracted beams have minimal path length differences so that the two diffracted beams are useable for interferometry.
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公开(公告)号：US12117292B1
公开(公告)日：2024-10-15
申请号：US16678796
申请日：2019-11-08
Applicant: AOSense, Inc.
Inventor： Miroslav Y. Shverdin , Matthew Cashen , Micah Ledbetter , Michael R. Matthews , Alexander F. Sugarbaker
Abstract: A system for atom interferometry includes one or more lasers disposed to 1) generate a first pair of beams that are initially spatially separated and later overlapped to follow a common path to intersecting an atomic cloud interaction region, wherein the first beam of the pair of beams acts as a first MOT beam and the second beam of the pair of beams acts as a first Raman beam; and 2) generate an additional beam, wherein the additional beam is multiplexed to be used alternately as a second MOT beam and as a second Raman beam, wherein the additional beam follows an opposing path to the common path when intersecting the atomic cloud interaction region.
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公开(公告)号：US11456086B1
公开(公告)日：2022-09-27
申请号：US17026810
申请日：2020-09-21
Applicant: AOSense, Inc.
Inventor： Miroslav Y. Shverdin , Matthew Todd Cashen , Micah P. Ledbetter , Martin M. Boyd , Michael R. Matthews , Alexander F. Sugarbaker , Adam T. Black , Akash Rakholia , Igor Teper
IPC: G21K1/00 , G01P15/093 , G01V7/04
Abstract: A high bandwidth gravimeter or accelerometer includes laser(s), modulator(s), and an atomic interferometer. The laser(s) and modulator(s) produce four laser frequencies. A first and second pair of laser frequencies are each separated by wm. The first and second pair are offset by wshift. A first laser frequency of the first pair and a second laser frequency of the second pair are separated by wm+wshift. A second laser frequency of the first pair and a first laser frequency of the second pair are separated by wm−wshift. The first pair is routed to arrive from a first direction at atoms in an interaction region, and the second pair from a second direction. The first pair are phase stable with respect to the second pair. wm is adjusted so that wm+wshift or wm−wshift corresponds to a Raman resonance for the atomic interferometer.
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公开(公告)号：US10330459B1
公开(公告)日：2019-06-25
申请号：US15447042
申请日：2017-03-01
Applicant: AOSense, Inc.
Inventor： Michael R. Matthews , Adam T. Black , Mark A. Kasevich , Micah Ledbetter
IPC: G01B9/02 , G01V7/04 , G01P15/093
Abstract: A light pulse interferometer includes a first atom source and a first laser. The first atom source is configured to direct a first group of atoms in a first direction. The first laser is configured to generate one or more interferometer laser beam pairs. The one or more interferometer laser beam pairs interact with the first group of atoms in an interferometer sequence of three or more pulses to produce atom interference. A first laser beam pair of the one or more interferometer laser beam pairs is disposed to interact with the first group of atoms to perform 1D-cooling and velocity control of the first group of atoms prior to the interferometer sequence.
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公开(公告)号：US20160183356A1
公开(公告)日：2016-06-23
申请号：US14551949
申请日：2014-11-24
Applicant: AOSense, Inc.
Inventor： Thomas H. Loftus , Artyom Vitouchkine , Michael R. Matthews , Adam T. Black , Igor Teper , Leo W. Hollberg , Todd L. Gustavson , Brent C. Young
IPC: H05H3/02
Abstract: The device for producing laser-cooled atoms comprises a two dimensional trap or a three-dimensional trap, or a combination of two- and three-dimensional traps. The two-dimensional trap comprises: three or more permanent magnets arranged around a perimeter of a loop, wherein a plane of the loop is perpendicular to a free axis of the two-dimensional atom trap, and the three or more permanent magnets bracket an internal volume of the two-dimensional atom trap; and one or more laser beam input ports enabling access for one or more laser beams to the internal volume of the two-dimensional atom trap.
Abstract translation: 用于生产激光冷却原子的装置包括二维阱或三维阱，或二维和三维陷阱的组合。 二维捕获器包括：围绕环的周边布置的三个或更多个永磁体，其中环的平面垂直于二维原子阱的自由轴，并且三个或更多个永磁体支架内部 体积的二维原子阱; 以及一个或多个激光束输入端口，其使得能够访问一个或多个激光束到二维原子阱的内部体积。
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