Near-Infrared Scanning Cavity Ringdown for Optical Loss Characterization of Supermirrors

A cavity ringdown system for probing the spatial variation of optical loss across high-reflectivity mirrors is described. This system is employed to examine substrate-transferred crystalline supermirrors and quantify the effect of manufacturing process imperfections. Excellent agreement is observed...

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Bibliographic Details
Published inarXiv.org
Main Authors Gar-Wing Truong, Winkler, Georg, Zederbauer, Tobias, Bachmann, Dominic, Heu, Paula, Follman, David, White, Mark, Heckl, Oliver, Cole, Garrett
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 30.04.2019
Subjects
Cavity ringdown
Crystal structure
Crystallinity
Image contrast
Physics - Instrumentation and Detectors
Substrates
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Summary:A cavity ringdown system for probing the spatial variation of optical loss across high-reflectivity mirrors is described. This system is employed to examine substrate-transferred crystalline supermirrors and quantify the effect of manufacturing process imperfections. Excellent agreement is observed between the ringdown-generated spatial measurements and differential interference contrast microscopy images. A 2 mm diameter ringdown scan in the center of a crystalline supermirror reveals highly uniform coating properties with excess loss variations below 1 ppm.
ISSN:2331-8422
DOI:10.48550/arxiv.1903.09665