{"paper":{"title":"Broadband Measurement of Coating Thermal Noise in Rigid Fabry-Perot Cavities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Eric K. Gustafson, Evan D. Hall, Frank Seifert, Koji Arai, Rana X. Adhikari, Tara Chalermsongsak","submitted_at":"2014-06-17T18:28:42Z","abstract_excerpt":"We report on the relative length fluctuation of two fixed-spacer Fabry-Perot cavities with mirrors fabricated from silica/tantala dielectric coatings on fused silica substrates. By locking a laser to each cavity and reading out the beat note $\\hat{\\nu} = \\nu_1 - \\nu_2$ of the transmitted beams, we find that, for frequencies from 10 Hz to 1 kHz, the amplitude spectral density of beat note fluctuation is $\\sqrt{S_\\hat{\\nu}(f)} = (0.5\\,\\mathrm{Hz})/f^{1/2}$. By careful budgeting of noise sources contributing to the beat note, we find that our measurement is consistent with the fluctuation in this"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.4467","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}