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cond-mat.mtrl-sci2026
Intrinsic Defects in Amorphous Optical Coatings of TiO-doped GeO for Gravitational-wave Detectors
K. Prasai, K. Lee, R. Bassiri +6
The increased laser power of future gravitational-wave detectors will require mirror coatings with optical absorption below 0.1 ppm per mirror. TiO-doped GeO, currently the…
cond-mat.mtrl-sci2026
Network Topology of Hafnia-Based Amorphous Optical Coatings by Grazing-Incidence X-ray Total Scattering and Atomic Modeling
K. Prasai, B. LaBell, K. H. Lee +4
Amorphous hafnia-based films are promising optical-coating materials for cryogenic GW detectors, but their performance depends on how doping and annealing modify the atomic network…
cond-mat.mtrl-sci2026
Atomic Structure of Amorphous Optical Coatings of TiO-doped GeO by Grazing-Incidence Total X-ray Scattering Measurements
K. Prasai, J. Jiang, K. Lee +13
Reducing coating thermal noise in future gravitational-wave detectors requires identifying the atomic motifs that control mechanical loss in amorphous optical coatings. We combine…