Characterization of an ultra-stable optical cavity developed in the industry for space applications

Berengere Argence; S. Bize; P. Lemonde; G. Santarelli; E. Prevost; R. Le Goff; T. Lévèque

doi:10.1117/12.2309037

20 November 2017 Characterization of an ultra-stable optical cavity developed in the industry for space applications

Berengere Argence, S. Bize, P. Lemonde, G. Santarelli, E. Prevost, R. Le Goff, T. Lévèque

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Proceedings Volume 10564, International Conference on Space Optics — ICSO 2012; 105641O (2017) https://doi.org/10.1117/12.2309037
Event: International Conference on Space Optics 2012, 2012, Ajaccio, Corsica, France

Abstract

We report the main characteristics and performances of the first – to our knowledge – prototype of an ultra-stable cavity designed and produced by industry with the aim of space missions. The cavity is a 100 mm long cylinder rigidly held at its midplane by an engineered mechanical interface providing an efficient decoupling from thermal and vibration perturbations. The spacer is made from Ultra-Low Expansion (ULE) glass and mirrors substrate from fused silica to reduce the thermal noise limit to 4x10^-16. Finite element modeling was performed in order to minimize thermal and vibration sensitivities while getting a high fundamental resonance frequency. The system was designed to be transportable, acceleration tolerant (up to several g) and temperature range compliant [-33°C; +73°C]. The axial vibration sensitivity was evaluated at 4x10^-11/(ms^-2), while the transverse one is < 1x10^-11/(ms^-2). The fractional frequency instability is < 1x10^-15from 0.1 to few seconds and reaches 5-6x10^-16at 1s.

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Berengere Argence, S. Bize, P. Lemonde, G. Santarelli, E. Prevost, R. Le Goff, and T. Lévèque "Characterization of an ultra-stable optical cavity developed in the industry for space applications", Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 105641O (20 November 2017); https://doi.org/10.1117/12.2309037

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