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 AC upgrade of the Laser Interferometer GravitationalwaveObservatory (LIGO). Its deformation and operation limits were measured and verified against finite element simulation. © 2020 Optical Society of America
High dynamic range thermally actuated bimorph mirror for gravitational wave detectors / Cao, H. T.; Brooks, A.; Ng, S. W. S.; Ottaway, D.; Perreca, A.; Richardson, J. W.; Chaderjian, A.; Veitch, P. J.. - In: APPLIED OPTICS. - ISSN 1559-128X. - 59:9(2020), pp. 2784-2790. [10.1364/AO.376764]
High dynamic range thermally actuated bimorph mirror for gravitational wave detectors
Perreca A.;
2020-01-01
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 AC upgrade of the Laser Interferometer GravitationalwaveObservatory (LIGO). Its deformation and operation limits were measured and verified against finite element simulation. © 2020 Optical Society of America| File | Dimensione | Formato | |
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