Adaptive Optical Closed-Loop Control Based on the Single-Dimensional Perturbation Descent Algorithm [PDF]
Sensors, 2023 Modal-free optimization algorithms do not require specific mathematical models, and they, along with their other benefits, have great application potential in adaptive optics.
Bo Chen +4 more
doaj +2 more sources
Design and Fabrication of a Large-Stroke Deformable Mirror Using a Gear-Shape Ionic-Conductive Polymer Metal Composite [PDF]
Sensors, 2012 Conventional camera modules with image sensors manipulate the focus or zoom by moving lenses. Although motors, such as voice-coil motors, can move the lens sets precisely, large volume, high power consumption, and long moving time are critical issues for
Guo-Dung John Su, Hsiang-Chun Wei
doaj +2 more sources
Characterisation of the influence function non-additivities for a 1024-actuator MEMS deformable mirror [PDF]
, 2010 In order to evaluate the potential of MEMS deformable mirrors for open-loop applications, a complete calibration process was performed on a 1024-actuator mirror. The mirror must be perfectly calibrated to obtain deterministic membrane deflection. The actuator's stroke-voltage relationship and the effect of the non- additivity of the influence functions
Blain, Celia +4 more
arxiv +3 more sources
Synthesis of non-uniformly correlated partially coherent sources using a deformable mirror [PDF]
, 2017 The near real-time synthesis of a non-uniformly correlated partially coherent source using a low-actuator-count deformable mirror is demonstrated. The statistical optics theory underpinning the synthesis method is reviewed.
M. Hyde, S. Bose-Pillai, R. A. Wood
semanticscholar +3 more sources
Wavefront Correction for Extended Sources Imaging Based on a 97-Element MEMS Deformable Mirror [PDF]
MicromachinesAdaptive optics (AO) systems are capable of correcting wavefront aberrations caused by transmission media or defects in optical systems. The deformable mirror (DM) plays a crucial role as a component of the adaptive optics system.
Huizhen Yang +6 more
doaj +2 more sources
High fidelity adaptive mirror simulations with reduced order models [PDF]
Journal of Mathematics in IndustryIn the design process of large adaptive mirrors numerical simulations represent the first step to evaluate the system design compliance in terms of performance, stability and robustness.
Bernadett Stadler +5 more
doaj +2 more sources
Thermal deformation compensation scheme to the sub-nanometre level of a piezoelectric offset mirror for MHz repetition rate free-electron laser [PDF]
Journal of Synchrotron RadiationFree-electron laser (FEL) facilities operating at MHz repetition rates can emit lasers with average powers reaching hundreds of watts. Partial absorption of this power induces thermal deformation of a few micrometres on the mirror surface.
Baoning Sun +7 more
doaj +2 more sources
Unimorph deformable mirror for space telescopes: design and manufacturing.
Optics Express, 2015 Large space telescopes made of deployable and lightweight structures suffer from aberrations caused by thermal deformations, gravitational release, and alignment errors which occur during the deployment procedure.
P. Rausch, S. Verpoort, U. Wittrock
semanticscholar +2 more sources
Opto-Electronic Advances, 2023 Integrating deformable mirrors within the optical train of an adaptive telescope was one of the major innovations in astronomical observation technology, distinguished by its high optical throughput, reduced optical surfaces, and the incorporation of the
Youming Guo +9 more
doaj +1 more source
Photonics, 2023 In a photoelectric tracking system, a deformable mirror can be used to adjust the transmission path of a light beam to achieve accurate measurement and tracking of the target position.
Bo Li, Dapeng Tian
doaj +1 more source