158 articles – 1987 Notices  [english version]
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Physical Review D 81 (2010) 082002
Molecular laser stabilization at low frequencies for the LISA mission
B. Argence1, H. Halloin1, O. Jeannin1, P. Prat1, O. Turazza1, E. De Vismes1, G. Auger1, E. Plagnol1
LISA Collaboration(s)

We have developed a 532 nm iodine stabilized laser system that may be suitable for the LISA mission (Laser Interferometer Space Antenna) or other future spaceborne missions. This system is based on an externally frequency-doubled Nd:YAG laser source and uses the molecular transfer spectroscopy technique for the frequency stabilization. This technique has been optimized for LISA: compactness (less than 1.1×1.1m2), vacuum compatibility, ease of use and initialization, minimization of the number of active components (acousto-optic modulators are both used for frequency shifting and phase modulating the pump beam). By locking on the a10 hyperfine component of the R(56)32-0 transition, we find an Allan standard deviation (σ) of 3×10-14 at 1 s and σ<2×10-14 for 20s≤τ≤103s. In terms of linear spectral density, this roughly corresponds to a stability better than 30Hz/Hz between 10-2 and 1 Hz with a stability decrease close to 1/f below 10 mHz.
1 :  APC - UMR 7164 - AstroParticule et Cosmologie
APC - Cosmologie et gravitation
Physique/Astrophysique/Instrumentation et méthodes pour l'astrophysique

Planète et Univers/Astrophysique/Instrumentation et méthodes pour l'astrophysique
Auxiliary and recording instruments – clocks and frequency standards – Metrological applications – optical frequency synthesizers for precision spectroscopy – Gravitational radiation detectors – mass spectrometers – and other instrumentation and techniques