Title:
COLD ATOM INTERFEROMETRY
Document Type and Number:
WIPO Patent Application WO/2019/040817
Kind Code:
A3
Abstract:
Improvements to atom interferometers. An improved atom interferometer has a single polarization-preserving fiber, coupled for propagation of beams of two Raman frequencies, and a parallel displacement beamsplitter for separating the laser beams into respective free-space-propagating parallel beams traversing at least one ensemble of atoms. A reflector generates one or more beams counterpropagating through the ensemble of atoms. Other improvements include interposing a beam-splitting surface common to a plurality of parallel pairs of beams counterpropagating through the ensemble of atoms, generating interference fringes between reflections of the beams to generate a detector signal; and processing the detector signal to derive at least one of relative phase and relative alignment between respective pairs of the counterpropagating beams.
Inventors:
GILL ALEXANDER (US)
BYRNES STEVEN J (US)
CHOY JENNIFER (US)
WANG CHRISTINE Y (US)
SINCLAIR MATTHEW A (US)
KELSEY ADAM (US)
JOHNSON DAVID (US)
BYRNES STEVEN J (US)
CHOY JENNIFER (US)
WANG CHRISTINE Y (US)
SINCLAIR MATTHEW A (US)
KELSEY ADAM (US)
JOHNSON DAVID (US)
Application Number:
PCT/US2018/047858
Publication Date:
April 04, 2019
Filing Date:
August 24, 2018
Export Citation:
Assignee:
CHARLES STARK DRAPER LABORATORY INC (US)
International Classes:
G01B11/27; G01C19/58; G01P15/08
Foreign References:
| US5579108A | 1996-11-26 |
Other References:
G TACKMANN ET AL: "Self-alignment of a compact large-area atomic Sagnac interferometer", NEW JOURNAL OF PHYSICS, 20 January 2012 (2012-01-20), pages 15002, XP055534095, Retrieved from the Internet DOI: 10.1088/1367-2630/14/1/015002
HOLGER MUELLER ET AL: "Active sub-Rayleigh alignment of parallel or antiparallel laser beams", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 6 July 2005 (2005-07-06), XP080202589, DOI: 10.1364/OL.30.003323
HOLGER MUELLER ET AL: "Active sub-Rayleigh alignment of parallel or antiparallel laser beams", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 6 July 2005 (2005-07-06), XP080202589, DOI: 10.1364/OL.30.003323
Attorney, Agent or Firm:
PETUCHOWSKI, Samuel J. et al. (US)
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