Scattering loss in precision metrology due to mirror roughness.

@article{Drori2022ScatteringLI,
  title={Scattering loss in precision metrology due to mirror roughness.},
  author={Yehonathan Drori and Jan Eichholz and Tega Boro Edo and Hiroko Yamamoto and Yutaro Enomoto and Gautam Venugopalan and Koji Arai and Rana X. Adhikari},
  journal={Journal of the Optical Society of America. A, Optics, image science, and vision},
  year={2022},
  volume={39 5},
  pages={
          969-978
        }
}
Optical losses degrade the sensitivity of laser interferometric instruments. They reduce the number of signal photons and introduce technical noise associated with diffuse light. In quantum-enhanced metrology, they break the entanglement between correlated photons. Such decoherence is one of the primary obstacles in achieving high levels of quantum noise reduction in precision metrology. In this work, we compare direct measurements of cavity and mirror losses in the Caltech 40 m gravitational… 

High-angular-resolution interferometric backscatter meter.

Backscatter limits many interferometric measurements, including gravitational wave detectors, by creating spurious interference. We describe an experimental method to directly and quantitatively

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