US 11,867,713 B2
Optomechanical inertial reference mirror for atom interferometer and associated methods
Felipe Guzmán, Tucson, AZ (US); Ernst Maria Rasel, Tucson, AZ (US); and Dennis Schlippert, Tucson, AZ (US)
Assigned to Arizona Board of Regents on Behalf of The University of Arizona, Tuscon, AZ (US); and Leibniz Universität Hannover, Hannover (DE)
Appl. No. 17/430,797
Filed by Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US); and Leibniz Universität Hannover, Hannover (DE)
PCT Filed Feb. 15, 2020, PCT No. PCT/US2020/018462
§ 371(c)(1), (2) Date Aug. 13, 2021,
PCT Pub. No. WO2020/168314, PCT Pub. Date Aug. 20, 2020.
Claims priority of provisional application 62/806,520, filed on Feb. 15, 2019.
Prior Publication US 2022/0163557 A1, May 26, 2022
Int. Cl. G01P 15/093 (2006.01); G01B 9/02 (2022.01); G01P 15/08 (2006.01); G01V 7/04 (2006.01)
CPC G01P 15/093 (2013.01) [G01B 9/02049 (2013.01); G01P 15/0802 (2013.01); G01V 7/04 (2013.01); G01B 2290/25 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A hybrid interferometer, comprising:
a first cavity mirror affixed to a frame;
a test mass physically coupled with the frame via one or more bridges such that the test mass is displaced along a sensing direction relative to the frame when the frame accelerates along the sensing direction;
a reflector affixed to the test mass;
a second cavity mirror affixed to the test mass and cooperating with the first cavity mirror to form a Fabry-Perot cavity with a cavity spacing that changes when the test mass is displaced relative to the frame along the sensing direction; and
an atom interferometer configured to measure acceleration of the test mass along the sensing direction using an optical beam that propagates along the sensing direction and is reflected by the reflector.