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Proceedings Paper • Open Access

The space optical clocks project
Author(s): S. Schiller; G. M. Tino; P. Lemonde; U. Sterr; Ch. Lisdat; A. Görlitz; N. Poli; A. Nevsky; C. Salomon

Paper Abstract

The Space Optical Clocks project aims at operating lattice clocks on the ISS for tests of fundamental physics and for providing high-accuracy comparisons of future terrestrial optical clocks. A pre-phase-A study (2007- 10), funded partially by ESA and DLR, included the implementation of several optical lattice clock systems using Strontium and Ytterbium as atomic species and their characterization. Subcomponents of clock demonstrators with the added specification of transportability and using techniques suitable for later space use, such as all-solid-state lasers, low power consumption, and compact dimensions, have been developed and have been validated. This included demonstration of laser-cooling and magneto-optical trapping of Sr atoms in a compact breadboard apparatus and demonstration of a transportable clock laser with 1 Hz linewidth. With two laboratory Sr lattice clock systems a number of fundamental results were obtained, such as observing atomic resonances with linewidths as low as 3 Hz, non-destructive detection of atom excitation, determination of decoherence effects and reaching a frequency instability of 1×10-16.

Paper Details

Date Published: 20 November 2017
PDF: 6 pages
Proc. SPIE 10565, International Conference on Space Optics — ICSO 2010, 1056531 (20 November 2017); doi: 10.1117/12.2309166
Show Author Affiliations
S. Schiller, Heinrich-Heine-Univ. Düsseldorf (Germany)
G. M. Tino, Univ. di Firenze (Italy)
P. Lemonde, Observatoire de Paris (France)
U. Sterr, Physikalisch-Technische Bundesanstalt (Germany)
Ch. Lisdat, Physikalisch-Technische Bundesanstalt (Germany)
A. Görlitz, Heinrich-Heine-Univ. Düsseldorf (Germany)
N. Poli, Univ. di Firenze (Italy)
A. Nevsky, Heinrich-Heine-Univ. Düsseldorf (Germany)
C. Salomon, Ecole Normale Superieure (France)

Published in SPIE Proceedings Vol. 10565:
International Conference on Space Optics — ICSO 2010
Errico Armandillo; Bruno Cugny; Nikos Karafolas, Editor(s)

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