Atom Interferometry with Top-Hat Laser Beams
arXiv:1808.03355 · doi:10.1063/1.5051663
Abstract
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.
arXiv comment4 pages plus references and Supplemental Material
References in corpus (27)
- Measurement of the fine-structure constant as a test of the Standard Model
- Precision Measurement of the Newtonian Gravitational Constant Using Cold Atoms
- Sensitive Absolute Gravity Gradiometry Using Atom Interferometry
- New determination of the fine structure constant and test of the quantum electrodynamics
- Detecting inertial effects with airborne matter-wave interferometry
- 6-axis inertial sensor using cold-atom interferometry
- Testing General Relativity with Atom Interferometry
- Continuous Cold-atom Inertial Sensor with Rotation Stability
- Test of Equivalence Principle at Level by a Dual-species Double-diffraction Raman Atom Interferometer
- Phase shift in atom interferometry due to spacetime curvature
- Mobile quantum gravity sensor with unprecedented stability
- Characterization and limits of a cold atom Sagnac interferometer
- Testing sub-gravitational forces on atoms from a miniature, in-vacuum source mass
- Stability comparison of two absolute gravimeters: optical versus atomic interferometers
- STE-QUEST - Test of the Universality of Free Fall Using Cold Atom Interferometry
- Precision atomic gravimeter based on Bragg diffraction
- Navigation-compatible hybrid quantum accelerometer using a Kalman filter
- Operating an atom interferometer beyond its linear range
- Low Frequency Gravitational Wave Detection With Ground Based Atom Interferometer Arrays
- Atom interferometric gravitational wave detection using heterodyne laser links
- The effect of wavefront aberrations in atom interferometry
- Off-resonant Raman transitions impact in an atom interferometer
- Large-momentum-transfer Bragg interferometer with strontium atoms
- He-McKellar-Wilkens topological phase in atom interferometry
- High-resolution atom interferometers with suppressed diffraction phases
- Stability enhancement by joint phase measurements in a single cold atomic fountain
- Calibration of atomic trajectories in a large-area dual-atom-interferometer gyroscope
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- Atomic source selection in space-borne gravitational wave detection
- Bi-selective pulses for large-area atom interferometry
- Accurate trajectory alignment in cold-atom interferometers with separated laser beams
- Bragg-diffraction-induced imperfections of the signal in retroreflective atom interferometers
- Degenerate optical resonator for the enhancement of large laser beams
- Experimental generation of a flat-top beam profile in a stable ring cavity
- Vortex Propagation in Orbital Angular Momentum Beams and the Effects of a Limited Aperture