Speaker
Simon Tait
(University of Glasgow)
Description
Future gravitational wave detectors plan to operate at cryogenic temperatures using crystalline silicon test masses which are transparent at higher wavelengths of light. Here we present measurements of a multi-material coating design that uses layers of ion-plated tantala, silica and amorphous silicon to reduce coating thermal noise and produce low optical absorption at low temperatures. Here we present the first cryogenic mechanical loss measurements (4K – 300K) of these coatings carried out on silicon disks using a cryogenic nodal support.
Primary authors
Simon Tait
(University of Glasgow)
Peter Murray
(SUPA University of Glasgow)
Maya Kinley-Hanlon
(University of Glasgow)
Iain Martin
(University of Glasgow)
Mr
Graeme McGhee
(University of Glasgow)
Mr
Robbie Mackessack
(University of Glagsow )
Victoria Graham
(University of Glasgow)
James Hough
(University of Glasgow)
Sheila Rowan
(University of Glasgow)
