Results 201 to 210 of about 698,514 (249)

Flat-top beam formation with miniature bimorph deformable mirror

Optical Engineering + Applications, 2020
Bimorph deformable mirror with 63 electrodes on 20 mm aperture is discussed. Methods of dividing all round electrode into sectors with a square of 2-4 mm2 are described.
J. Sheldakova, V. Toporovsky, I. Galaktionov, A. Nikitin, A. Rukosuev, V. Samarkin, A. Kudryashov   +6 more
semanticscholar   +1 more source

Deformable mirrors for the FALCON concept

SPIE Proceedings, 2005
FALCON is an original concept for a next generation instrument which could be used on the ESO Very Large Telescope (VLT) and on the future Extremely Large Telescopes (ELT). It is a multi-objects integral field spectrograph with multiple small integral field units (IFUs).
Puech, Mathieu, Chemla, Fanny, Laporte, Philippe, Jagourel, Pascal, Gendron, Éric, Hammer, François, Assémat, François, Conan, Jean-Marc, Fusco, Thierry, Liotard, Arnaud, Zamkotsian, Frédéric   +10 more
openaire   +4 more sources

Deformable mirror with thermal actuators

Optics Letters, 2002
Low-cost adaptive optics is applied in lasers, scientific instrumentation, ultrafast sciences, and ophthalmology. These applications demand that the deformable mirrors used be simple, inexpensive, reliable, and efficient. We report a novel type of ultralow-cost deformable mirror with thermal actuators.
Gleb Vdovin, Mikhail Loktev
openaire   +4 more sources

Thermal deformable mirror

SPIE Proceedings, 2006
Beam correction of high power lasers often requires large wavefront deformations with very slow rates of change. Adaptive Optics Associates, Inc. (AOA) has developed a new type of deformable mirror in which thermal expansion of tubes control the mirror's figure. This paper is the subject of a patent disclosure.
Greg LaRosa, Michael A Taylor, Rob Coerver, Carlos A. Caicedo, John Wilt, Allan Wirth   +5 more
openaire   +2 more sources

Elastic Deformation of Lightweight Mirrors

Applied Optics, 1973
Results of analytical and experimental studies on the elastic deformation of lightweight mirrors under various support conditions are presented and compared. The analytical results were obtained using the finite-element method, which employs elements having stretching, bending, and twisting capability. Both structural deformation and deviation from the
R. M. Richard, A. J. Malvick
openaire   +3 more sources

Composite Deformable Mirror

SPIE Proceedings, 1989
A mathematical model for a spherical hexagon mirror is described along with the model verifications. A flat hexagon epoxy mirror with aluminum core is used in test procedures in addition to a flat aluminum honeycomb mirror. Deformable reflector concepts are discussed and piezoelectric actuators are analyzed.
C. P. Kuo, B. K. Wada
openaire   +2 more sources

Microelectromechanical deformable mirrors

IEEE Journal of Selected Topics in Quantum Electronics, 1999
A new class of silicon-based deformable mirrors is described. These devices are capable of correcting time-varying aberrations in imaging or beam forming applications. Each mirror is composed of a flexible silicon membrane supported by an underlying array of electrostatic parallel plate actuators.
R. Krishnamoorthy Mali, Julie A. Perreault, Thomas G. Bifano, Mark N. Horenstein   +3 more
openaire   +2 more sources

Bimorph deformable mirror with a high density of electrodes to correct for atmospheric distortions.

Applied Optics, 2019
This paper presents a new development of small-diameter, high-spatial-resolution, semipassive bimorph deformable mirrors to be used in different imaging systems. To manufacture the small control elements, laser engraving technology is used. An ultrasonic
V. Toporovskiy, A. Kudryashov, V. Samarkin, J. Sheldakova, A. Rukosuev, A. Skvortsov, D.V. Pshonkin   +6 more
semanticscholar   +1 more source

Advances of TNO’s electromagnetic deformable mirror development

Astronomical Telescopes + Instrumentation, 2018
TNO is developing Deformable Mirror (DM) technology, targeted for aberration correction in high-end Adaptive Optics (AO) applications in the field of lithography, astronomy, space and laser communication. The heart of this deformable mirror technology is
S. Kuiper, N. Doelman, J. Human, R. Saathof, W. Klop, M. Maniscalco   +5 more
semanticscholar   +1 more source

Continuously Deformable Mirrors

SPIE Proceedings, 1987
Low spatial and temporal frequency correction of optical wavefronts can be achieved with continuously deformable mirrors that are being developed by the Atomic Vapor Laser Isotope Separation (AVLIS) Program at Lawrence Livermore National Laboratory. These devices are simple in design, low in cost, require relatively few actuators, and are capable of ...
Richard H. Sawicki, William C. Sweatt
openaire   +2 more sources