18 months Postdoctoral position available in the OHMS team at FEMTO-ST (Besançon, France) to study a new generation of ultra-stable optical Fabry-Perot cavity.
The aim of this work is to study a new generation of ultra-stable optical Fabry-Perot cavity. Such a cavity, made from single crystal silicon maintained below 1 K, will be used as the frequency reference for an ultra-stable laser. It will pave the way for the next generation of ultra-stable lasers with fractional frequency stability lower than 10-17.
As a first step, the Fabry-Perot cavity will be placed and cooled down in a dilution cryostat. A laser source will be frequency-locked to the cavity in order to access its optical properties. Refine measurement of those properties is the second step. The last step will focus on performances characterization to demonstrate the potential of this ultra-low temperature reference.