A direct comparison between a MEMS deformable mirror and a liquid crystal spatial light modulator in signal-based wavefront sensing [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 Aberrations degrade the performance of optical systems in terms of resolution and signal-to-noise ratio. This work explores the feasibility of a signal-based wavefront sensor, which employs a search algorithm to estimate Zernike coefficients of given ...
Jewel A. R., Akondi V., Vohnsen B.
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Suppressing low-order eigenmodes with local control for deformable mirrors [PDF]
, 2012 To improve the mechanical characteristics of actively controlled continuous faceplate deformable mirrors in adaptive optics, a strategy for reducing crosstalk between adjacent actuators and for suppressing low-order eigenmodes is proposed.
Andersen, Torben +4 more
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Motion-free TSOM using a deformable mirror.
Optics Express, 2020 Through-focus scanning optical microscopy (TSOM) is a model-based optical metrology method that involves the scanning of a target through the focus of an optical microscope.
J. H. Lee +3 more
semanticscholar +1 more source
Swept source optical coherence tomography Gabor fusion splicing technique for microscopy of thick samples using a deformable mirror [PDF]
, 2015 We present a swept source optical coherence tomography (OCT) system at 1060 nm equipped with a wavefront sensor at 830 nm and a deformable mirror in a closed-loop adaptive optics (AO) system.
Adrian Bradu +5 more
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MEMS actuated deformable mirror [PDF]
SPIE Proceedings, 2006 This ongoing work concerns the creation of a deformable mirror by the integration of MEMS actuators with Nanolaminate foils through metal compression boning. These mirrors will use the advantages of these disparate technologies to achieve dense actuation of a high-quality, continuous mirror surface.
Papavasiliou, A. +4 more
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Calibration and performance evaluation of a monomorph deformable mirror
Results in Optics, 2022 To achieve diffraction-limited performance with a 50 cm solar telescope at the Udaipur solar observatory the development of a high-order adaptive optics (AO) system is currently in progress. The system includes a monomorph deformable mirror (MDM) with 85
A. Raja Bayanna +3 more
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Terahertz adaptive optics with a deformable mirror [PDF]
Optics Letters, 2018 We report on the wavefront correction of a terahertz (THz) beam using adaptive optics, which requires both a wavefront sensor that is able to sense the optical aberrations, as well as a wavefront corrector. The wavefront sensor relies on a direct 2D electro-optic imaging system composed of a ZnTe crystal and a CMOS camera.
Brossard, Mathilde +3 more
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Research on a Decoupling Algorithm for the Dual-Deformable-Mirrors Correction System
Applied Sciences, 2023 Wavefront distortion caused by atmospheric turbulence can be described as different types of aberrations, such as piston, tilt, defocusing, astigmatism, coma and so on.
Jingyuan Liang +3 more
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CIAO: An on-the-shelf adaptive optics system for astronomers [PDF]
EPJ Web of Conferences, 2023 Since 1990, adaptive optics are used in astronomy to remove the effects of atmospheric turbulence, and then retrieve diffraction-limited images, even in bad seeing conditions.
Dovillaire Guillaume, Leveder Cora
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Active Optics in Astronomy: Freeform Mirror for the MESSIER Telescope Proposal
Mathematical and Computational Applications, 2018 Active optics techniques in astronomy provide high imaging quality. This paper is dedicated to highly deformable active optics that can generate non-axisymmetric aspheric surfaces—or freeform surfaces—by use of a minimum number of actuators ...
Gerard Rene Lemaitre +2 more
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