Results 101 to 110 of about 23,503 (294)

Active Beam Shaping System and Method Using Sequential Deformable Mirrors [PDF]

open access: yes
An active optical beam shaping system includes a first deformable mirror arranged to at least partially intercept an entrance beam of light and to provide a first reflected beam of light, a second deformable mirror arranged to at least partially ...
Norman, Colin A., Pueyo, Laurent A.
core   +1 more source

Stroke saturation on a MEMS deformable mirror for woofer-tweeter adaptive optics

open access: yes, 2009
High-contrast imaging of extrasolar planet candidates around a main-sequence star has recently been realized from the ground using current adaptive optics (AO) systems. Advancing such observations will be a task for the Gemini Planet Imager, an upcoming "
Bruce Macintosh   +30 more
core   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

open access: yesAdvanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Open-Loop Woofer-Tweeter Control on the LAO Multi-Conjugate Adaptive Optics Testbed

open access: yes, 2007
Advances in micro deformable mirror (DM) technologies such as MEMs, have stimulated interest in the characteristics of systems that include a high stroke mirror in series with a high actuator count mirror.
Ammons, Mark, Gavel, Don, Laag, Edward
core   +1 more source

Deformable mirror-based photoacoustic remote sensing (PARS) microscopy for depth scanning. [PDF]

open access: yesBiomed Opt Express, 2022
Mukhangaliyeva L   +7 more
europepmc   +1 more source

Development of an ELT XAO testbed using a Mach-Zehnder wavefront sensor: calibration of the deformable mirror [PDF]

open access: green, 2015
Christian Delacroix   +6 more
openalex   +1 more source

External Reflection From Two‐Photon Laser‐Printed Micromirrors Enables Photomechanical Actuation at a 90° Incident Angle

open access: yesAdvanced Functional Materials, EarlyView.
Light reflectance increases along incidence angle and transmittance significantly drops around 90‐degree incidence angle. Here, we report two‐photon laser printed micro mirrors that redirect the skimming light beam into normal light absorption. Using this technique, light‐driven micro walkers and grippers are demonstrated by using grazing incidence ...
Leilei Song, Jianfeng Yang, Hao Zeng
wiley   +1 more source

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

open access: yesAdvanced Functional Materials, EarlyView.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta   +8 more
wiley   +1 more source

High-contrast Imaging from Space: Speckle Nulling in a Low Aberration Regime

open access: yes, 2005
High-contrast imaging from space must overcome two major noise sources to successfully detect a terrestrial planet angularly close to its parent star: photon noise from diffracted star light, and speckle noise from star light scattered by instrumentally ...
Krist J.   +4 more
core   +1 more source

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