“Hologram” Research Papers, August 2021 — summary from Astrophysics Data System, Springer Nature and DOAJ

Astrophysics Data System — summary generated by Brevi Assistant

We report in this paper the examination of a plane holographic optical aspect to be made use of as an aberration-corrected grating for a slitless spectrograph, inserted in a convergent telescope beam of light. While estimating the advantages of a hologram for the spectrum resolution, the roadmap to create an affordable holographic element for the Vera Rubin Observatory complementary telescope has been established. In this paper, we present two strategies for videotaping a quasi-hologram on the steel surface area by femtosecond laser pulses. The recording procedure is done by turning the polarization of the laser light beam by a spatial light or a half-wave plate modulator, so we can control the spatial alignment of the formed laser-induced periodic surface structures. In this paper, we recommend an optimized iterative algorithm for producing phase-only Fourier holograms based upon quadratic phase. At the beginning of the version, we multiply the quadratic stage by the target photo as the preliminary facility amplitude of the model, after that throughout it iterates between the things domain name and the spectral domain name, we utilize a dynamic-compensation approach to constrain the item plane. Full-color holographic three-dimensional projection innovation is an important study instructions in the area of holographic 3D screen, which is committed to providing the viewer with 3D impression and shade experience. Several two-dimensional slice photos of a full-color 3D things can be reconstructed by a single composite hologram created by the proposed encoding algorithm based on the analytical formula without iteration. Vergence and holiday accommodation responses of human vision are extremely crucial variables when a 3D image is observed, and a vergence-accommodation problem causes affective distortion, aesthetic discomfort, and exhaustion for an observer.

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Springer Nature — summary generated by Brevi Assistant

In this paper, we provide two approaches for taping a quasi-hologram on the steel surface by femtosecond laser pulses. The recording process is done by revolving the polarization of the laser beam by a spatial light or a half-wave plate modulator, so we can regulate the spatial positioning of the formed laser-induced periodic surface structures. For the very first time to our expertise, we handled to record a hologram of a bitmap photo by constantly changing the laser beam of light polarization by SLM during scanning. A hologram tutor is an educational medium that has encouraging potential to act as a replacement for actual educators in classroom learning. Once they had finished the learning session with the hologram tutor, the User Experience Questionnaire was utilized to acquire responses from students. This type kind of hologram tutor is a possible alternative for actual human characters in developing the hologram tutor medium. We recommend an area of view augmentation method utilizing the line symmetric picture input in the single layer volumetric holographic waveguide. We develop a mathematical design and assess the virtual image to be seen by the viewer thinking about the communication volume of the signal light ray within the volumetric hologram waveguide. It is located that the diffracted light strength is differed with each ray angle due to the variant of the interaction quantity, which causes an essential problem of bad harmony of luminance on the virtual image in the volumetric hologram waveguide.

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DOAJ — summary generated by Brevi Assistant

Owing to the possible to adjust concurrently amplitude and phase of electromagnetic wave, complex-amplitude holographic metasurfaces can achieve enhanced image-reconstruction high quality compared to amplitude-only and phase-only ones. The repair comparison of an intricate multi-intensity area circulation between CAHM models designed by our approach and by RSDT even more confirms this factor. Abstract In this paper, we provide two strategies for taping a quasi-hologram on the steel surface area by femtosecond laser pulses. The recording process is done by rotating the polarization of the laser beam by a spatial light or a half-wave plate modulator, so we can manage the spatial orientation of the formed laser-induced periodic surface frameworks. In this write-up, we suggest a recommendation light wave multiplexing scheme to enhance the information capacity of computer-generated holograms. A changed Gerchberg — Saxton formula was utilized to improve photo top quality, and various images might be reconstructed when the multiplexed hologram was lit up by matching reference light waves. This paper recommends a method to draw out a watermark and install on an electronic hologram using a deep neural network. By including attack simulation and holographic restoration in the network, the deep neural network for watermarking can concurrently educate invisibility and robustness. In this paper, we propose a holographic near-eye 3D screen technique based on large-size computer-generated hologram. The diffraction boundary angle of the rebuilt light creating each picture factor is equivalent to the optimum diffraction angle of the SLM, so the viewing angle of the image generated by the CGH is enlarged.

Please keep in mind that the text is machine-generated by the Brevi Technologies’ Natural language Generation model, and we do not bear any responsibility. The text above has not been edited and/or modified in any way.

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