Holographic Optical Lenses Recorded on a Glassy Matrix-Based Photopolymer for Solar Concentrators
Photonics, 2021 Global warming is a very topical issue, therefore the search for new renewable energy sources is considered of fundamental importance. Among these, solar energy offers great possibilities considering that the amount of sunlight hitting the Earth ‘s ...
Maria Antonietta Ferrara +2 more
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Photopolymer materials for volume phase holographic optical elements [PDF]
International Conference on Space Optics — ICSO 2016, 2017 Volume Phase Holographic Gratings (VPHGs) cover a relevant position as dispersing elements in spectrographic instrumentations with low and medium resolution. This is due to their unique properties especially in terms of diffraction efficiency. These devices have to provide dispersion, resolving power, bandwidth and diffraction efficiency according to ...
A. Bianco +3 more
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Технологія і техніка друкарства, 2022 Our scientific article presents materials that illuminate a new experimental method of polarization tomography of the polycrystalline structure of polymer phase-inhomogeneous layers.
Олександр Григорович Ушенко +4 more
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Photopolymer-based volume holographic optical elements: design and possible applications [PDF]
Journal of the European Optical Society-Rapid Publications, 2015 In this paper, Volume Holographic Optical Elements (V-HOEs), such as holographic gratings and spherical lenses, are designed and fabricated by using a prototype of photopolymer.
Bianco G. +5 more
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Optical vortex generation by volume holographic elements with embedded phase singularity: Effects of misalignments [PDF]
Ukrainian Journal of Physical Optics, 2013 Based on the linear theory for optical vortex (OV) formation in volume holographic elements (HE) with embedded phase singularity (A. Bekshaev et al., Opt. Commun. 285 (2012) 4005), we analyze theoretically the OV-beams obtained when the incident Gaussian beam axis deviates from the optical axis of the HE.
A Bekshaev +4 more
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Geometric and physical configurations of meta‐atoms for advanced metasurface holography
InfoMat, 2021 Metasurfaces consisting of subwavelength structures, so‐called meta‐atoms, have steadily attracted considerable attention for advanced holography due to their advantages in terms of high‐resolution holographic images, large field of view, and compact ...
Joohoon Kim +5 more
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Volume Holographic Optical Elements as Solar Concentrators: An Overview
Applied Sciences, 2019 Generally, to reduce the area of a photovoltaic cell, which is typically very expensive, solar concentrators based on a set of mirrors or mechanical structures are used.
Maria Antonietta Ferrara +2 more
doaj +1 more source
Volume diffraction gratings for optical telecommunications applications: design study for a spectral equalizer [PDF]
, 2004 The main characteristics required for a diffraction grating used for demultiplexing functions in spectral equalizing systems are investigated, both theoretically and experimentally.
Chevallier, Raymond +5 more
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One-step volumetric additive manufacturing of complex polymer structures. [PDF]
, 2017 Two limitations of additive manufacturing methods that arise from layer-based fabrication are slow speed and geometric constraints (which include poor surface quality). Both limitations are overcome in the work reported here, introducing a new volumetric
Browar, Allison EM +7 more
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The Infrared Imaging Spectrograph (IRIS) for TMT: Volume phase holographic grating performance testing and discussion [PDF]
, 2014 Maximizing the grating efficiency is a key goal for the first light instrument IRIS (Infrared Imaging Spectrograph) currently being designed to sample the diffraction limit of the TMT (Thirty Meter Telescope). Volume Phase Holographic (VPH) gratings have
Chen, Shaojie +7 more
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