A high angular resolution interferometric backscatter meter
Optics
2022-04-29 v2
Abstract
Backscatter limits many interferometric measurements, including gravitational wave detectors, by creating spurious interference. We describe an experimental method to directly and quantitatively measure the backscatter interference. We derive and verify experimentally a relation between backscatter interference, beam radius and the scattering sample bidirectional reflectance distribution function. We also demonstrate that our method is able to measure backscatter from high quality optics for angles as low as 500 urad with a 160 urad angular resolution.
Cite
@article{arxiv.2202.07370,
title = {A high angular resolution interferometric backscatter meter},
author = {Michal Was and Eleonora Polini},
journal= {arXiv preprint arXiv:2202.07370},
year = {2022}
}
Comments
4 pages, 4 figures