Results 31 to 40 of about 22,341 (248)

Crosstalk Reduction in Voxels for a See-Through Holographic Waveguide by Using Integral Imaging with Compensated Elemental Images

Photonics, 2021
The representation of three-dimensional volumetric pixels, voxels, is an important issue for the near-to-eye displays (NEDs) to solve the vergence-accommodation conflict problem. Although the holographic waveguides using holographic optical element (HOE)
Jiwoon Yeom, Yeseul Son, Kwangsoon Choi
doaj   +1 more source

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, Larkin, James E., Maire, Jerome, Meyer, Elliot, Mieda, Etsuko, Moore, Anna M., Simard, Luc, Wright, Shelley A.   +7 more
core   +2 more sources

Orbital Angular Momentum generation in infrared with Holographic Optical Elements [PDF]

EPJ Web of Conferences
Optical vortices are of interest in the infrared range for applications in the fields of optical fiber communications and femtosecond laser pulses. Among the current techniques used to generate optical vortices, the use of a Spatial Light Modulator (SLM)
Marín-Sáez Julia, Sevilla Marina, Paredes Álvaro, Collados Victoria, Atencia Jesús   +4 more
doaj   +1 more source

Imaging in white light with a thick-phase transmission holographic doublet [PDF]

, 1989
An afocal two-element holographic imaging system is presented. This system can be used to work in white light. The holographic optical elements (holographic lenses) are made as thick phase holograms on silver halide sensitized gelatin (SHSG) and they ...
Beléndez Vázquez, Augusto, Fimia Gil, Antonio, Pascual Villalobos, Inmaculada   +2 more
core   +2 more sources

Higher dimensional quantum communication in a curved spacetime: an efficient simulation of the propagation of the wavefront of a photon

, 2018
A photon with a modulated wavefront can produce a quantum communication channel in a larger Hilbert space. For example, higher dimensional quantum key distribution (HD-QKD) can encode information in the transverse linear momentum (LM) or orbital angular ...
Bennett, Ekert, Hermann, Miller, Miller
core   +1 more source

Diffractive Optical Elements with a Large Angle of Operation Recorded in Acrylamide Based Photopolymer on Flexible Substrates

International Journal of Polymer Science, 2014
A holographic device characterised by a large angular range of operation is under development. The aim of this study is to increase the angular working range of the diffractive lens by stacking three layers of high efficiency optical elements on top of ...
Hoda Akbari, Izabela Naydenova, Lina Persechini, Sean M. Garner, Pat Cimo, Suzanne Martin   +5 more
doaj   +1 more source

Volume Holographic Optical Elements [PDF]

Optical Engineering, 2004
Optical engineering continues to impact more and more modern devices for communication, color display, data storage, illumination, and remote sensing in the new millenium. The amalgamation of modern optics and associated microelectronic technologies has paved the road to greatly enhance new optoelectronic devices with practical applications.
openaire   +1 more source

Indeterminacy of Holographic Quantum Geometry

, 2008
An effective theory based on wave optics is used to describe indeterminacy of position in holographic spacetime with a UV cutoff at the Planck scale. Wavefunctions describing spacetime positions are modeled as complex disturbances of quasi-monochromatic ...
Craig J. Hogan, G. ’t Hooft, G. ’t Hooft, J. Hough, M. Born   +4 more
core   +1 more source

A holographic system for subsea recording and analysis of plankton and other marine particles [PDF]

, 2003
We report here details of the design, development, initial testing and field-deployment of the HOLOMAR system for in-situ subsea holography and analysis of marine plankton and nonliving particles.
Alexander, S, Chalvidan, V, Craig, G, Diard, A, Foresti, GL, Gentili, S, Hendry, DC, Hobson, PR, Lampitt, RS, Nareid, H, Nebrensky, JJ, Pescetto, A, Pieroni, GG, Player, MA, Saw, K, Serpico, S, Tipping, K, Trucco, A, Watson, J   +18 more
core   +1 more source

Holographic optical element to generate achromatic vortices [PDF]

Optics Express, 2013
A compound holographic optical element to generate achromatic vortices with high efficiency, based on the combination of two volume phase holograms, is designed and constructed. This element is compact and easy to align. It has high damage threshold, so it can be used with ultraintense laser pulses.
Atencia, Jes?s, Collados, Mar?a-Victoria, Quintanilla, Manuel, Mar?n-S?ez, Julia, Sola Larra?aga, I?igo Juan   +4 more
openaire   +5 more sources