9th Symposium on Frequency Standards and Metrology

Development of a laser stabilized on an ultra-stable silicon cryogenic Fabry-Pérot cavity for dark matter detection

Not scheduled

20m

Kingscliff, NSW, Australia

Invited Poster Precision Tests on Fundamental Physics

Speakers

Mrs Yara Hariri (FEMTO-ST)Prof. Jonathan Gillot (FEMTO-ST)

Description

Ultra-stable Fabry-Pérot cavities are ideal tools for ultra-light dark matter detection, since the fluctuations of length of the cavity can be detected on the frequency of the laser stabilized on the cavity. At FEMTO-ST, we dispose of an ultra-stable silicon cavity suitable for a test of detection of ultra-light dark matter in an energy range close to $10^{-10}$ eV.c$^{-2}$. We present the status of the development of our ultra-stable laser and the mechanical response of the cavity in presence of ultra-light dark matter, strongly enhanced by the mechanical quality factor of silicon compared to ULE glass or fused silica.

Presentation materials

Abstract-silicon cavity-DM-gillot.pdf