US 12,276,503 B2
Phase-space filtering in thermal beam inertial sensors
Mark A. Kasevich, Palo Alto, CA (US); and Igor Teper, Half Moon Bay, CA (US)
Assigned to AOSense, Inc., Fremont, CA (US)
Filed by AOSense, Inc., Sunnyvale, CA (US)
Filed on Sep. 28, 2021, as Appl. No. 17/487,539.
Prior Publication US 2023/0392928 A1, Dec. 7, 2023
Int. Cl. G01C 19/64 (2006.01); G01C 19/58 (2006.01); G21K 1/00 (2006.01)
CPC G01C 19/64 (2013.01) [G01C 19/58 (2013.01); G21K 1/00 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A device, comprising:
one or more thermal atomic sources to provide one or more atomic beams;
a set of atom interference lasers disposed to provide interrogation laser beams that interrogate the one or more atomic beams to assist in generating atom interference, wherein the interrogation laser beams are configured so as to enable a first speed selectivity and a first angle selectivity of a set of atoms used in the generating of the atom interference by restricting the set of atoms that are involved in the atom interference to a first speed-angle phase space associated with the set of atoms, wherein an interrogation angle of the interrogation laser beams to the one or more atomic beams is selected; and
one or more additional sets of laser beams configured in such a way that, combined with the first speed selectivity and the first angle selectivity of the set of atom interference lasers, achieve a second speed selectivity, a second angle selectivity, or the second speed selectivity and the second angle selectivity of the set of atoms that contribute to a final detected interference signal by restricting the set of atoms that are involved in the atom interference to a second speed-angle phase space associated with the set of atoms, wherein an additional laser beam of the one or more additional sets of laser beams used to achieve the second speed selectivity, the second angle selectivity, or the second speed selectivity and the second angle selectivity comprises a detection laser beam, wherein a power is selected for the detection laser beam, wherein the first speed-angle phase space and the second speed-angle phase space and the power selected for the detection beam combine to enhance signal stability.