Results 201 to 210 of about 7,503 (250)

Design and Implementation of a Sun Outage Simulation System with High Uniformity and Stray Light Suppression Capability. [PDF]

Sensors (Basel)
Mao Z, Li Z, Liu Y, Gao L, Zhao J.
europepmc   +1 more source

Light-based electron aberration corrector. [PDF]

Nat Photonics
Chirita Mihaila MC, Koutenský P, Moriová K, Kozák M.   +3 more
europepmc   +1 more source

Realization of a Pre-Sample Photonic-Based Free-Electron Modulator in Ultrafast Transmission Electron Microscopes. [PDF]

ACS Photonics
Ferrari BM, Duncan CJR, Yannai M, Dahan R, Rosi P, Ostroman I, Bravi MG, Niedermayr A, Abudi TL, Adiv Y, Fishman T, Park ST, Masiel D, Lagrange T, Carbone F, Grillo V, García de Abajo FJ, Kaminer I, Vanacore GM.   +18 more
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Reconfigurable dynamic beam shaping in seeded frequency doubling

Optics Letters, 2001
A new method that allows simultaneous frequency doubling and dynamic shaping of a Gaussian beam into a variety of light patterns is introduced. The novel technique is based on the controllable generation of multiple-vortex patterns in seeded schemes. Applications include the generation of dynamic patterns of frequency-doubled, coherent optical tweezers.
Lluís Torner, Gabriel Molina-Terriza
exaly   +4 more sources

Dynamic MEMS-based linear (1D) diffusers for laser beam homogenizing and beam shaping

Proceedings of SPIE, 2009
We present a dynamic laser beam shaper based on MEMS technology. We show a prototype of a dynamic diffuser made of single crystal silicon. A linearly deformable silicon micromembrane is used to diffuse a laser beam in one dimension. Resonance frequencies of the membrane can range from 1 kHz to 100 kHz.
A Bich, K J Weible, W Noell
exaly   +2 more sources

Dynamic beam shaping for LED lighting

Applied Optics, 2023
We describe an electrically tunable liquid crystal microlens array with a 65 mm clear aperture that allows the dynamic symmetric broadening of white light without mechanical movements. The fundamental mechanism of broadening is demonstrated to involve a spatial twist of molecular orientation.
Vladimir Presniakov, Armen Zohrabyan, Oleksandr Sova, Seydou Bassene, Mihai Cotovanu, Aram Bagramyan, Behzad Khodadad, Tom Killick, Tigran Galstian   +8 more
openaire   +2 more sources

Dynamic indoor free-space optical communication enabled by beam steering and beam shaping

Applied Optics, 2023
Indoor free-space optical communication (FSO) provides orders of magnitude larger usable bandwidth compared to radio-frequency links but suffers from an intrinsic trade-off between areal coverage and received power. In this paper, we report a dynamic indoor FSO system enabled by a line-of-sight optical link featuring advanced beam ...
Spencer Liverman, Cade W. Trotter, Luc Bouchard, Hayden Bialek, Thinh Nguyen, Arun Natarajan, Alan X. Wang   +6 more
openaire   +2 more sources

Dynamic shape control for a flexible beam

International Journal of Systems Science, 1988
In this paper we discuss the dynamic shape control for a flexible beam such that even under unknown step disturbances, the shape of the beam will track the desired shape after a certain regulation time. In order to treat the case of point controls and point observations, we formulate the flexible beam by a second-order partial differential equation on ...
Toshihiro Kobayashi, Zheng Hua Luo
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Dynamic beam shaping with freeform optics

SPIE Proceedings, 2014
In this work we construct coherent superpositions of Gaussian and vortex modes which can be described to occupy the complex-plane. We demonstrate how these fields can be experimentally constructed in a digital, controllable manner with a spatial light modulator.
Thomas J. Suleski, Jason A. Shultz, Paul J. Smilie   +2 more
openaire   +1 more source