Results 11 to 20 of about 12,991 (264)
A Content Hiding Method for Digital Hologram Using Multiple Fresnel Diffraction
Applied Sciences, 2020 A digital hologram (DH) is so highly valued that it needs to be protected from exposure to an unpermitted person, which could be done by a content encryption.
Young-Ho Seo +2 more
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High Resolution Computer-Generated Rainbow Hologram
Applied Sciences, 2018 We have developed an output device for a computer-generated hologram (CGH) named a fringe printer, which can output a 0.35- μ m plane-type hologram. We also proposed several CGH with a fringe printer.
Takeshi Yamaguchi, Hiroshi Yoshikawa
doaj +1 more source
Reduction in the reconstruction error of computer-generated holograms by photorefractive volume holography [PDF]
, 1993 We suggest a method for coding high-resolution computer-generated volume holograms. It involves splitting the computer-generated hologram into multiple holograms, their individual recording as volume holograms by use of the maximal resolution available ...
Barhen, Jacob +3 more
core +2 more sources
Form-birefringent computer-generated holograms [PDF]
Optics Letters, 1996 Polarization-selective computer-generated holograms made with form-birefringent nanostructures were designed, fabricated, and evaluated experimentally at 1.5 microm. The fabricated element showed a large polarization contrast ratio (>250:1) and a high diffraction efficiency (>40% for a binary phase level element).
Xu, Fang +5 more
openaire +3 more sources
Sub-Terahertz Computer Generated Hologram with Two Image Planes
Applied Sciences, 2019 An advanced optical structure such as a synthetic hologram (also called a computer-generated hologram) is designed for sub-terahertz radiation. The detailed design process is carried out using the ping-pong method, which is based on the modified ...
Mateusz Surma +3 more
doaj +1 more source
IEEE Access, 2021 We demonstrate an interactive holographic display system for real-time drawing and erasing of 3D point-cloud images. This system detects the position of the observer's fingertip with a motion sensor, which it uses to calculate the complex amplitude ...
Mikito Takenaka +3 more
doaj +1 more source
High-space bandwidth product computer-generated holography using volume holography [PDF]
, 1993 We suggest a method for coding high resolution computer-generated volume holograms. It involves splitting the computer-generated hologram into multiple holograms, each individually recorded as a volume hologram utilizing the maximal resolution available ...
Barhen, Jacob +3 more
core +1 more source
Superpositions of the Orbital Angular Momentum for Applications in Quantum Experiments [PDF]
, 2001 Two different experimental techniques for preparation and analyzing superpositions of the Gaussian and Laguerre-Gassian modes are presented. This is done exploiting an interferometric method on the one hand and using computer generated holograms on the ...
Alipasha Vaziri +6 more
core +3 more sources
Computer-generated holograms [PDF]
Photoniques, 2017 Diffractive optical elements (DOEs) have many advantages over conventional ones. For a start, they are generally lighter, take up less room, and have a wider variety of properties. They can also be used to fabricate hybrid elements that modify polarization, compensate for dispersion, and so on.
openaire +1 more source
Generation of Generalized-Gauss Laser Beams via a Spatial Light Modulator [PDF]
, 2018 Generalized-Gauss laser beams can be described as a continuous transition between the well-known Hermite-Gauss (HG) and Laguerre-Gauss (LG) laser beams.
Conry Young, Jessica P, Dix, Samantha
core +3 more sources