Low frequency noise fiber delay stabilized laser with reduced sensitivity to acceleration

B. Argence (1) , C. Clivati , J. -L. Dournaux (2) , D. Holleville (1) , B. Faure (3) , P. Lemonde (1) , G. Santarelli (1)

1 Observatoire de Paris
2 GEPI - Galaxies, Etoiles, Physique, Instrumentation
3 CNES - Centre National d’Études Spatiales [Paris]

Lasers with sub-hertz line-width and fractional frequency instability around 1×10^-15 for 0.1 s to 10 s averaging time are currently realized by locking onto an ultra-stable Fabry-Perot cavity using the Pound-Drever-Hall method. This powerful method requires tight alignment of free space optical components, precise polarization adjustment and spatial mode matching. To circumvent these issues, we use an all-fiber Michelson interferometer with a long fiber spool as a frequency reference and a heterodyne detection technique with a fibered acousto optical modulator (AOM)¹. At low Fourier frequencies, the frequency noise of our system is mainly limited by mechanical vibrations, an issue that has already been explored in the field of optoelectronic oscillators.^2,3,4

Domaines: Planète et Univers [physics]

B. Argence, C. Clivati, J. -L. Dournaux, D. Holleville, B. Faure, et al.. Low frequency noise fiber delay stabilized laser with reduced sensitivity to acceleration. Proceedings of the SPIE, 2017, à renseigner, Unknown Region. ⟨10.1117/12.2309248⟩. ⟨insu-03971368⟩