3.6k citations · 43.6k across the 233 of their papers we have counts for
7 papers · 1 filter
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…
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…
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…
Machine Learning Assisted Modeling of Amorphous TiO-Doped GeO for Advanced LIGO Mirror Coatings
Jun Jiang, Rui Zhang, Kiran Prasai +4
The mechanical loss angle of amorphous TiO-doped GeO can be lower than 10, making it a candidate for Laser Interferometer Gravitational-wave Observatory (LIGO) mirro…
Enhanced Medium Range Order in Vapor Deposited Germania Glasses at Elevated Temperatures
Le Yang, Gabriele Vajente, Mariana Fazio +9
Glasses are nonequilibrium solids with properties highly dependent on their method of preparation. In vapor-deposited molecular glasses, structural organization could be readily tu…
Structural evolution of binary oxide nanolaminates with annealing and its impact on room-temperature internal friction
Le Yang, Mariana Fazio, Gabriele Vajente +6
Internal friction in oxide thin films imposes a critical limitation to the sensitivity and stability of ultra-high finesse optical cavities for gravitational wave detectors. Strate…
Medium range structural order in amorphous tantala spatially resolved with changes to atomic structure by thermal annealing
Martin J. Hart, Riccardo Bassiri, Konstantin B. Borisenko +6
Amorphous tantala (a-Ta2O5) is an important technological material that has wide ranging applications in electronics, optics and the biomedical industry. It is used as the high ref…