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Proceedings Paper • Open Access

PHARAO space atomic clock: new developments on the laser source
Author(s): Muriel Saccoccio; Jacques Loesel; Claude Coatantiec; Eric Simon; Philippe Laurent; Pierre Lemonde; I. Maksimovic; M. Abgrall

Paper Abstract

The PHARAO project purpose is to open the way for a new atomic clock generation in space, where laser cooling techniques and microgravity allow high frequency stability and accuracy.

The French space agency, CNES is funding and managing the clock construction. The French SYRTE and LKB laboratories are scientific and technical advisers for the clock requirements and the follow-up of subsystem development in industrial companies.

EADS SODERN is developing two main subsystems of the PHARAO clock: the Laser Source and the Cesium Tube where atoms are cooled, launched, selected and detected by laser beams. The Laser Source includes an optical bench and electronic devices to generate the laser beams required.

This paper describes PHARAO and the role laser beams play in its principle of operation. Then we present the Laser Source design, the technologies involved, and the status of development. Lastly, we focus of a key equipment to reach the performances expected, which is the Extended Cavity Laser Diode.

Paper Details

Date Published: 21 November 2017
PDF: 10 pages
Proc. SPIE 10568, International Conference on Space Optics — ICSO 2004, 1056819 (21 November 2017); doi: 10.1117/12.2307971
Show Author Affiliations
Muriel Saccoccio, CNES, Ctr. Spatial de Toulouse (France)
Jacques Loesel, CNES, Ctr. Spatial de Toulouse (France)
Claude Coatantiec, EADS-SODERN (France)
Eric Simon, EADS-SODERN (France)
Philippe Laurent, BNM-SYRTE (France)
Pierre Lemonde, BNM-SYRTE (France)
I. Maksimovic, BNM-SYRTE (France)
M. Abgrall, BNM-SYRTE (France)

Published in SPIE Proceedings Vol. 10568:
International Conference on Space Optics — ICSO 2004
Josiane Costeraste; Errico Armandillo, Editor(s)

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