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Title: PHARAO laser source flight model: Design and performances

In this paper, we describe the design and the main performances of the PHARAO laser source flight model. PHARAO is a laser cooled cesium clock specially designed for operation in space and the laser source is one of the main sub-systems. The flight model presented in this work is the first remote-controlled laser system designed for spaceborne cold atom manipulation. The main challenges arise from mechanical compatibility with space constraints, which impose a high level of compactness, a low electric power consumption, a wide range of operating temperature, and a vacuum environment. We describe the main functions of the laser source and give an overview of the main technologies developed for this instrument. We present some results of the qualification process. The characteristics of the laser source flight model, and their impact on the clock performances, have been verified in operational conditions.
Authors:
; ; ; ; ; ; ;  [1] ; ; ; ; ;  [2] ;  [3]
  1. Centre National d’Etudes Spatiales, 18 avenue Edouard Belin, 31400 Toulouse (France)
  2. Sodern, 20 Avenue Descartes, 94451 Limeil-Brévannes (France)
  3. LNE-SYRTE, CNRS, UPMC, Observatoire de Paris, 61 avenue de l’Observatoire, 75014 Paris (France)
Publication Date:
OSTI Identifier:
22392395
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ATOMS; CESIUM; COMPATIBILITY; DESIGN; ELECTRIC POWER; LASERS; LIMITING VALUES; OPERATION; PERFORMANCE; SPACE