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Point Absorber Limits to Future Gravitational-Wave Detectors
W. Jia, H. Yamamoto, K. Kuns +198
High-quality optical resonant cavities require low optical loss, typically on the scale of parts per million. However, unintended micron-scale contaminants on the resonator mirrors…
Low mechanical loss TiO:GeO coatings for reduced thermal noise in Gravitational Wave Interferometers
Gabriele Vajente, Le Yang, Aaron Davenport +11
The sensitivity of current and planned gravitational wave interferometric detectors is limited, in the most critical frequency region around 100 Hz, by a combination of quantum noi…
LIGOs Quantum Response to Squeezed States
L. McCuller, S. E. Dwyer, A. C. Green +194
Gravitational Wave interferometers achieve their profound sensitivity by combining a Michelson interferometer with optical cavities, suspended masses, and now, squeezed quantum sta…
Exploration of co-sputtered TaO-ZrO thin films for gravitational-wave detectors
M. Abernathy, A. Amato, A. Ananyeva +45
We report on the development and extensive characterization of co-sputtered tantala-zirconia thin films, with the goal to decrease coating Brownian noise in present and future grav…
Point absorbers in Advanced LIGO
Aidan F. Brooks, Gabriele Vajente, Hiro Yamamoto +198
Small, highly absorbing points are randomly present on the surfaces of the main interferometer optics in Advanced LIGO. The resulting nano-meter scale thermo-elastic deformations a…
Improving the Robustness of the Advanced LIGO Detectors to Earthquakes
Eyal Schwartz, A Pele, J Warner +196
Teleseismic, or distant, earthquakes regularly disrupt the operation of ground--based gravitational wave detectors such as Advanced LIGO. Here, we present \emph{EQ mode}, a new glo…
First Demonstration of Electrostatic Damping of Parametric Instability at Advanced LIGO
Carl Blair, Slawek Gras, Richard Abbott +16
Interferometric gravitational wave detectors operate with high optical power in their arms in order to achieve high shot-noise limited strain sensitivity. A significant limitation…