Calibration of Deformable Mirrors for Open-Loop Control [PDF]
Sensors, 2022 Deformable mirrors enable the control of wave fronts for the compensation of aberrations in optical systems and/or for beam scanning. Manufacturers of deformable mirrors typically provide calibration data that encode for the fabrication tolerances among ...
Marcel Leutenegger, Stefan W. Hell
doaj +4 more sources
Operation of a MOEMS Deformable Mirror in Cryo: Challenges and Results [PDF]
Micromachines, 2017 Micro-opto-electro-mechanical systems (MOEMS) Deformable Mirrors (DM) are key components for next generation optical instruments implementing innovative adaptive optics systems, both in existing telescopes and in the future ELTs.
Frederic Zamkotsian +5 more
doaj +3 more sources
Shape Control of a Unimorph Deformable Mirror for Space Active Optics under Uncertainties [PDF]
Micromachines, 2023 This paper focuses on the change of morphing capabilities for a unimorph deformable mirror impacted by environmental factors, which works in space for active optics applications.
Kainan Wang, Yian Yu, André Preumont
doaj +2 more sources
The deformable mirror demonstration mission (DeMi) CubeSat: optomechanical design validation and laboratory calibration [PDF]
Astronomical Telescopes + Instrumentation, 2018 Coronagraphs on future space telescopes will require precise wavefront correction to detect Earth-like exoplanets near their host stars. High-actuator count microelectromechanical system (MEMS) deformable mirrors provide wavefront control with low size ...
Gregory Allan +11 more
semanticscholar +3 more sources
A magnetic liquid deformable mirror for high stroke and low order axially symmetrical aberrations [PDF]
, 2006 We present a new class of magnetically shaped deformable liquid mirrors made of a magnetic liquid (ferrofluid). Deformable liquid mirrors offer advantages with respect to deformable solid mirrors: large deformations, low costs and the possibility of very large mirrors with added aberration control. They have some disadvantages (e.g.
Anna Ritcey +4 more
arxiv +4 more sources
Investigation of PZT Materials for Reliable Piezostack Deformable Mirror with Modular Design [PDF]
Micromachines, 2023 This article presents a study of the electrophysical properties of a piezoceramic material for use in adaptive optics. The key characteristics that may be important for the manufacturing of piezoelectric deformable mirrors are the following ...
Vladimir Toporovsky +5 more
doaj +2 more sources
Wavefront sensing with a brightest pixel selection algorithm [PDF]
, 2011 Astronomical adaptive optics systems with open-loop deformable mirror control have recently come on-line. In these systems, the deformable mirror surface is not included in the wavefront sensor paths, and so changes made to the deformable mirror are not fed back to the wavefront sensors.
A. G. Basden +16 more
arxiv +4 more sources
Design and Simulation of a 19-Electrode MEMS Piezoelectric Thin-Film Micro-Deformable Mirror for Ophthalmology [PDF]
MicromachinesThis study presents a numerical simulation-based investigation of a MEMS (micro-electromechanical systems)technology-based deformable mirror employing a piezoelectric film for fundus examination in adaptive optics.
Yisen Hu +7 more
doaj +2 more sources
Analysis of a discrete-layout bimorph disk elements piezoelectric deformable mirror [PDF]
, 2018 . We introduce a discrete-layout bimorph disk elements piezoelectric deformable mirror (DBDEPDM), driven by the circular flexural-mode piezoelectric actuators.
Hairen Wang +4 more
semanticscholar +3 more sources
An active piezoelectric plane X-ray focusing mirror with a linearly changing thickness [PDF]
Journal of Synchrotron RadiationX-ray mirrors for synchrotron radiation are often bent into a curved figure and work under grazing-incidence conditions due to the strong penetrating nature of X-rays to most materials.
Naxi Tian +5 more
doaj +2 more sources