Recent Advances in Photoalignment Liquid Crystal Polarization Gratings and Their Applications
Tiegang Lin,Jin Xie,Yingjie Zhou,Yaqin Zhou,Yide Yuan,Fan Fan,Shuangchun Wen +6 more
- Vol. 11, Iss: 8, pp 900
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TLDR
In this article, the physical principles, exposure methods and fabrication process of Pancharatnam-berry phase deflectors are analyzed and presented relevant promising applications in photonics and imaging optics.Abstract:
Liquid crystal (LC) circular polarization gratings (PGs), also known as Pancharatnam–Berry (PB) phase deflectors, are diffractive waveplates with linearly changed optical anisotropy axes. Due to the high diffraction efficiency, polarization selectivity character, and simple fabrication process, photoalignment LC PGs have been widely studied and developed especially in polarization management and beam split. In this review paper, we analyze the physical principles, show the exposure methods and fabrication process, and present relevant promising applications in photonics and imaging optics.read more
Citations
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Journal Article
Plasmonic Photopatterning of Complex Molecular Orientations in Liquid Crystals
TL;DR: In this paper, a plasmonic photopatterning technique is proposed and demonstrated for aligning the molecular orientation in liquid crystals (LCs) in patterns with designer complexity.
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A Review of Two-Dimensional Liquid Crystal Polarization Gratings
TL;DR: In this paper, a review summarizes the research progress of 2D polarization gratings, including assembling two 1D polarization patterns, a 2D holographic lithography by polarization interference and a micro-pixelated electric field stimulated 2D liquid crystal (LC) structure.
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Catenary optics: a perspective of applications and challenges
TL;DR: Catenary optics as discussed by the authors is an emerging direction of subwavelength optics, which is indispensable in describing the electric fields and dispersion property of coupled metallic sub-wavelength structures and designing broadband high-efficiency geometric-phase metasurfaces.
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Photosensitive Alignment: Advanced Electronic Paper-Based Devices
TL;DR: The reversible photoalignment effect imposed on the director in nematic liquid crystals that provides an approach for fabrication of advanced optically addressed devices and shows that the intensity modulation of the irradiation light has a potential to generate improved grayscale visualization.
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Fabrication of Polarization Grating on N-Benzylideneaniline Polymer Liquid Crystal and Control of Diffraction Beam
TL;DR: In this article , photo-alignable liquid crystalline polymers composed of phenyl benzoate terminated with N-benzylideneaniline were evaluated, which are capable of axis-selective photoreaction, photoinduced orientation, and surface relief grating formation.
References
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Orbital angular momentum: origins, behavior and applications
Alison M. Yao,Miles J. Padgett +1 more
TL;DR: In this paper, it was shown that if every polarization vector rotates, the light has spin; if the phase structure rotates and if a light has orbital angular momentum (OAM), the light can be many times greater than the spin.
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