Atom Interferometry with Top-Hat Laser Beams

Autor: Nicolas Mielec, Leonid A. Sidorenkov, D. Horville, David Holleville, Ranjita Chanu Sapam, M. Altorio, Remi Geiger, Arnaud Landragin
Přispěvatelé: Systèmes de Référence Temps Espace (SYRTE), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Galaxies, Etoiles, Physique, Instrumentation (GEPI), PSL Research University (PSL)-PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Diffraction
Atom interferometer
Physics - Instrumentation and Detectors
Materials science
Physics and Astronomy (miscellaneous)
Atomic Physics (physics.atom-ph)
Phase (waves)
FOS: Physical sciences
Physics::Optics
01 natural sciences
Physics - Atomic Physics
law.invention
010309 optics
phase shift
Optics
law
0103 physical sciences
Astronomical interferometer
Physics::Atomic and Molecular Clusters
Physics::Atomic Physics
[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
010306 general physics
numerical calculations
Quantum Physics
business.industry
beam instability
Instrumentation and Detectors (physics.ins-det)
atom: interferometer
[PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph]
Interferometry
Physics::Accelerator Physics
beam profile
Quantum Physics (quant-ph)
business
laser: beam
Beam (structure)
Beam splitter
performance
Optics (physics.optics)
Physics - Optics
Gaussian beam
Zdroj: Appl.Phys.Lett.
Appl.Phys.Lett., 2018, 113 (16), pp.161108. ⟨10.1063/1.5051663⟩
DOI: 10.1063/1.5051663⟩
Popis: The uniformity of the intensity and phase of laser beams is crucial to high-performance atom interferometers. Inhomogeneities in the laser intensity profile cause contrast reductions and systematic effects in interferometers operated with atom sources at micro-Kelvin temperatures, and detrimental diffraction phase shifts in interferometers using large momentum transfer beam splitters. We report on the implementation of a so-called top-hat laser beam in a long-interrogation-time cold-atom interferometer to overcome the issue of the inhomogeneous laser intensity encountered when using Gaussian laser beams. We characterize the intensity and relative phase profiles of the top-hat beam and demonstrate its gain in atom-optics efficiency over a Gaussian beam, in agreement with numerical simulations. We discuss the application of top-hat beams to improve the performance of different architectures of atom interferometers.
4 pages plus references and Supplemental Material
Databáze: OpenAIRE
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