3 papers
physics.ins-det2026
High-Frequency Thermal Noise in Michelson Interferometers
Daniel Grass, Sander M. Vermeulen, Ian A. O. MacMillan +1
Thermal noise in optics constrains the precision of optical experiments, including Michelson interferometers, optical clocks, and optomechanical sensors. While high-power optical e…
physics.ins-det2026
Robust Bilinear-Noise-Optimal Control for Gravitational-Wave Detectors: A Mixed LQG/ Approach
Ian A. O. MacMillan, Lee P. McCuller
At its lowest frequencies, LIGO is limited by noise in its many degrees of freedom of suspended optics, which, in turn, introduce noise in the interferometer through their feedback…
cond-mat.mtrl-sci2018
Mechanical Ringdown Studies of Large-Area Substrate-Transferred GaAs/AlGaAs Crystalline Coatings
Steven D. Penn, Maya M. Kinley-Hanlon, Ian A. O. MacMillan +5
We investigated elastic loss in GaAs/AlGaAs multilayers to help determine the suitability of these coatings for future gravitational wave detectors. We measured large (…