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Title: The application of Raman laser in gravity measurement and metrology

Atom Interferometry is proved to be a potential method for measuring the acceleration of atoms due to Gravity, we are now building a feasible system of cold atom gravimeter, it is based on the atom interferometry technology by coherently manipulating the cold atoms in a fountain (with a height of 1m) with specific Raman lasers, the cold atom wave packet is splitted, combined, and then re-splitted in the process. Then the atomic wave packet will acquire different phase because of the different evolution path. The precise acceleration can be deduced through the precision measurement of atomic interference fringes phase, and this will be a high precision standard of acceleration. At present, the preparation of Raman laser and the precise control of the laser Frequency have been finished, and they have been proved to meet the requirements of the experiment.
Authors:
;  [1] ;  [2] ;  [3]
  1. School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing, 100191, P.R. China and Key Laboratory for Metrology, Changcheng Institute of Metrology and Measurement (CIMM), Beijing 100095, P.R. (China)
  2. Key Laboratory for Metrology, Changcheng Institute of Metrology and Measurement (CIMM), Beijing 100095, P.R. (China)
  3. School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing, 100191, P.R. (China)
Publication Date:
OSTI Identifier:
22311314
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1600; Journal Issue: 1; Conference: AIVELA 2014: 11. international conference on vibration measurements by laser and noncontact techniques, Ancona (Italy), 25-27 Jun 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCELERATION; ACCURACY; ATOMS; EVOLUTION; GRAVITATION; INTERFERENCE; INTERFEROMETRY; LASERS; POTENTIALS; RAMAN EFFECT; WAVE PACKETS