Speaker
Description
Radiative cooling is a contact-free cooling technique that allows cooling of 100kg scale mirrors to cryogenic temperatures. However, future optomechanical applications require lightweight mirrors, for which radiative cooling is inefficient. In this talk, I will present optical refrigeration as a low-vibration cooling method for a phase-sensitive optomechanical amplifier, proposed to improve the sensitivity of future gravitational wave detectors (Physical Review A 102.2 (2020): 023507). With moderate improvements on coolants currently available, optical refrigeration can improve the amplifier gain by a factor of 2-10, relative to what is possible with radiative cooling. I will also show that the technique does not add significant noise to the amplifier.
