Articles with "beam steering" as a keyword



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Pulsed‐Laser‐Induced IR Stereoscopic Imaging

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Published in 2019 at "Advanced Optical Materials"

DOI: 10.1002/adom.201901706

Abstract: Research on displays that can provide stereoscopic information for advertising, education, medical applications, and military simulations is on the rise. Because IR images are invisible to human eye, they can be used when security or… read more here.

Keywords: laser beam; pulsed laser; laser; stereoscopic ... See more keywords
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Actively Switchable Beam‐Steering via Hydrophilic/Hydrophobic‐Selective Design of Water‐Immersed Metasurface

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Published in 2021 at "Advanced Optical Materials"

DOI: 10.1002/adom.202100297

Abstract: Liquid immersion on metasurface was earlier demonstrated to realize spectral control. However, it remains a great challenge to achieve tunable phase modulation and versatile beam‐steering performance, which are critical for practical optoelectronic devices. Here, a… read more here.

Keywords: metasurface; hydrophilic hydrophobic; beam; switchable beam ... See more keywords
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Mechanical and Self‐Deformable Spatial Modulation Beam Steering and Splitting Metasurface

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Published in 2021 at "Advanced Optical Materials"

DOI: 10.1002/adom.202100821

Abstract: Metasurfaces or artificial electromagnetic structures, offer feasible options to manipulate electromagnetic waves with compact and planar form factors. Tuneable metasurfaces can steer and split the electromagnetic wavefront, and are strongly desirable for many engineering and… read more here.

Keywords: beam steering; mechanical self; steering splitting; spatial modulation ... See more keywords
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Full Manipulation of the Power Intensity Pattern in a Large Space‐Time Digital Metasurface: From Arbitrary Multibeam Generation to Harmonic Beam Steering Scheme

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Published in 2020 at "Annalen der Physik"

DOI: 10.1002/andp.202000321

Abstract: Beyond the scope of space-coding metasurfaces, space-time digital metasurfaces can substantially expand the application scope of digital metamaterials in which simultaneous manipulation of electromagnetic waves in both space and frequency domains would be feasible. In… read more here.

Keywords: beam steering; space; time; power ... See more keywords
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Beam steering characteristics of highly directive photoconductive dipole phased array antenna for terahertz imaging application

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Published in 2019 at "Optical and Quantum Electronics"

DOI: 10.1007/s11082-018-1730-7

Abstract: In this paper, the beam-steering characteristics of photoconductive dipole phased array antenna configuration at 1.95 THz is presented. The proposed array antenna configuration with frequency selective surface favourably improves its gain and directivity which is useful… read more here.

Keywords: beam steering; photoconductive dipole; antenna; phased array ... See more keywords
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Precise and robust optical beam steering for space optical instrumentation

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Published in 2019 at "CEAS Space Journal"

DOI: 10.1007/s12567-019-00271-x

Abstract: This approach permits much finer adjustments of the beam direction and position when compared to other beam steering techniques of the same mechanical precision. This results in a much increased precision, accuracy and mechanical stability.… read more here.

Keywords: beam steering; coupling efficiency; space; robust optical ... See more keywords
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Fast beam steering enabled by a chip-scale optical phased array with 8 × 8 elements

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Published in 2020 at "Optics Communications"

DOI: 10.1016/j.optcom.2020.125267

Abstract: Abstract We present a two-dimensional (2D) optical phased array (OPA) with 8 × 8 elements in which light is electro-optically controlled by silicon phase modulators. The randomly distributed initial phases are calibrated through an interference technique to… read more here.

Keywords: beam steering; phased array; optical phased; beam ... See more keywords
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A Semisolid Micromechanical Beam Steering System Based on Micrometa-Lens Arrays.

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Published in 2022 at "Nano letters"

DOI: 10.1021/acs.nanolett.1c04493

Abstract: Optical beam steerers have been widely employed for information acquisitions. Numerous beam steering schemes have been developed, and each of them can satisfy practical requirements for certain scenarios. However, there is still a lack of… read more here.

Keywords: beam steering; beam; steering system; micromechanical beam ... See more keywords
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Nanoengineered Spintronic-Metasurface Terahertz Emitters Enable Beam Steering and Full Polarization Control.

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Published in 2022 at "Nano letters"

DOI: 10.1021/acs.nanolett.2c03906

Abstract: The demand for emerging applications at the terahertz frequencies motivates the development of novel and multifunctional devices for the generation and manipulation of terahertz waves. In this work, we report the realization of multifunctional spintronic-metasurface… read more here.

Keywords: beam steering; control; spintronic metasurface; terahertz ... See more keywords
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Electrically Driven Reprogrammable Vanadium Dioxide Metasurface Using Binary Control for Broadband Beam Steering

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Published in 2022 at "ACS Applied Materials & Interfaces"

DOI: 10.1021/acsami.2c10194

Abstract: Resonant optical phased arrays are a promising way to reach fully reconfigurable metasurfaces in the optical and near-infrared (NIR) regimes with low energy consumption, low footprint, and high reliability. Continuously tunable resonant structures suffer from… read more here.

Keywords: beam steering; control; binary control; using binary ... See more keywords
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Waveguide-Imprinted Slim Polymer Films: Beam Steering Coatings for Solar Cells

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Published in 2019 at "ACS Photonics"

DOI: 10.1021/acsphotonics.8b01236

Abstract: We report that transparent polymer coatings imprinted with tilted planar waveguides significantly reduce optical loss caused by the scattering of incident light by front metal contacts of solar cel... read more here.

Keywords: slim polymer; beam steering; imprinted slim; films beam ... See more keywords