Results 291 to 300 of about 675,553 (330)

High-spatial resolution stacked-actuator deformable mirror for correction of atmospheric wavefront aberrations.

Applied Optics, 2021
Deformable mirrors are vital components of any adaptive optical system. Considering such a crucial role in compensation of incident wavefront distortions, the main requirements are imposed on these elements that determine performance of the entire system.
V. Samarkin, J. Sheldakova, V. Toporovsky, A. Rukosuev, A. Kudryashov   +4 more
semanticscholar   +1 more source

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

Miniature bimorph deformable mirror for laser beam shaping

LASE, 2020
Laser beam shaping technology nowadays requires as small diameter of the adaptive optics as possible. In our lab we usually control for laser radiation by means of bimorph deformable mirrors with a typical size of more than 50 mm.
J. Sheldakova, I. Galaktionov, A. Nikitin, A. Rukosuev, V. Samarkin, V. Toporovsky, A. Kudryashov   +6 more
semanticscholar   +1 more source

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

Wide aperture high resolution stacked-actuator deformable mirror for high power laser beam correction

LASE, 2019
Thermal effects in the active laser medium influence on the quality of the laser beam in high-power laser systems. Temperature fluctuations lead to refractive index modulation in the medium, thus the intensity of the radiation is significantly reduced ...
V. Toporovsky, A. Kudryashov, V. Samarkin, J. Sheldakova, A. Rukosuev   +4 more
semanticscholar   +1 more source

Water-cooled stacked-actuator deformable mirror for atmospheric applications

Optical Engineering + Applications, 2019
High-power laser systems are widely used for technological purposes or laser fusion experiments, but also to deliver the energy to some remote places here on the Earth as well as in space.
V. Toporovskiy, A. Kudryashov, V. Samarkin, J. Sheldakova, A. Rukosuev   +4 more
semanticscholar   +1 more source

Unimorph deformable mirror for telescopes and laser applications

International Conference on Space Optics — ICSO 2010, 2019
Over the past 5 years we have developed a new type of unimorph deformable mirror. The main advantages of this mirror technology are • very low surface scattering due to the use of super polished glass • excellent coatings, even suitable for high power la
S. Verpoort, U. Wittrock
semanticscholar   +1 more source

High-contrast imaging stability using MEMS deformable mirror

Optical Engineering + Applications, 2019
Direct imaging of Earth-like exoplanets in reflected starlight requires high contrast imaging systems, such as coronagraph, with starlight suppression better than 1e-10 over a broad spectral band.
Camilo Mejia Prada, E. Serabyn, F. Shi
semanticscholar   +1 more source

LC phase modulator vs. deformable mirror for laser beam shaping: What is better?

Optical Engineering + Applications, 2018
The latest results on intensity distribution transformation from Gaussian to a flattop and doughnut are presented in the paper. The wavefront was modified with bimorph deformable mirror to reach the desired intensity distribution in the farfield.
J. Sheldakova, I. Galaktionov, A. Nikitin, A. Rukosuev, A. Kudryashov   +4 more
semanticscholar   +1 more source