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Type: Journal article
Title: High dynamic range thermally actuated bimorph mirror for gravitational wave detectors
Author: Cao, H.T.
Brooks, A.
Ng, S.W.S.
Ottaway, D.
Perreca, A.
Richardson, J.W.
Chaderjian, A.
Veitch, P.J.
Citation: Applied Optics, 2020; 59(9):2784-2790
Publisher: Optical Society of America
Issue Date: 2020
ISSN: 1559-128X
Statement of
Huy Tuong Cao, Aidan Brooks, Sebastian W. S. Ng, David Ottaway, Antonio Perreca, Jonathan W. Richardson ... et al.
Abstract: Adaptive optics are crucial for overcoming the fabrication limits on mirror curvature in high-precision interferometry. We describe a low-cost thermally actuated bimorph mirror with 200 mD linear response, which meets dynamic range and low aberration requirements for the ${\rm{A}} + $ upgrade of the Laser Interferometer Gravitational-wave Observatory (LIGO). Its deformation and operation limits were measured and verified against finite element simulation.
Rights: © 2020 Optical Society of America.
DOI: 10.1364/AO.376764
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