Results 31 to 40 of about 38,080 (271)

Comparison of beam generation techniques using a phase only spatial light modulator [PDF]

, 2016
Whether in art or for QR codes, images have proven to be both powerful and efficient carriers of information. Spatial light modulators allow an unprecedented level of control over the generation of optical fields by using digital holograms.
Arnold, Aidan S., Clark, Thomas W., Franke-Arnold, Sonja, Offer, Rachel F., Radwell, Neal   +4 more
core   +1 more source

Three-dimensionally reconfigurable focusing of laser by mechanically tunable metalens doublet with built-in holograms for alignment

Nanophotonics, 2023
Metalenses have potential to replace various bulky conventional optical elements with ultrathin nanostructure arrays. In particular, active metalenses with reconfigurable focusing capability have attracted considerable interest from the academic and ...
Jung Joonkyo, Kim Hyeonhee, Shin Jonghwa
doaj   +1 more source

Holographic particle localization under multiple scattering [PDF]

, 2019
We introduce a novel framework that incorporates multiple scattering for large-scale 3D particle-localization using single-shot in-line holography. Traditional holographic techniques rely on single-scattering models which become inaccurate under high ...
Kamilov, Ulugbek S., Tahir, Waleed, Tian, Lei   +2 more
core   +1 more source

Lossless Compression Using the Ramanujan Sums: Application to Hologram Compression

IEEE Access, 2020
The Ramanujan sum, introduced by S. Ramanujan, has been utilized-among other applications-for signal processing. It has recently been suggested that transforms using the Ramanujan sums may also provide the benefit of data compression. This study presents
Harutaka Shiomi, Tomoyoshi Shimobaba, Takashi Kakue, Tomoyoshi Ito   +3 more
doaj   +1 more source

Quantum memory for images - a quantum hologram

, 2007
Matter-light quantum interface and quantum memory for light are important ingredients of quantum information protocols, such as quantum networks, distributed quantum computation, etc.
A. Gatti, A. Kuzmich, Denis V. Vasilyev, Eugene S. Polzik, Ivan V. Sokolov, J. Sherson, M. I. Kolobov   +6 more
core   +1 more source

Spatiotemporal hologram

Nature Communications
Spatiotemporal structured light has opened up new avenues for optics and photonics. Current spatiotemporal manipulation of light mostly relies on phase-only devices such as liquid crystal spatial light modulators to generate spatiotemporal optical fields with unique photonic properties.
Qian Cao, Nianjia Zhang, Andy Chong, Qiwen Zhan   +3 more
openaire   +4 more sources

Absorbing new subjects: holography as an analog of photography [PDF]

, 2006
I discuss the early history of holography and explore how perceptions, applications, and forecasts of the subject were shaped by prior experience. I focus on the work of Dennis Gabor (1900–1979) in England,Yury N. Denisyuk (1927-2005) in the Soviet Union,
Johnston, Sean F.
core   +2 more sources

Effects of misalignments in the optical vortex transformation performed by holograms with embedded phase singularity

, 2010
Spatial characteristics of diffracted beams produced by a "fork" hologram from an incident circular Laguerre-Gaussian beam whose axis differ from the hologram optical axis are studied theoretically.
A.Ya. Bekshaev, Allen, Anan'ev, Anzolin, Anzolin, Basistiy, Basistiy, Bazhenov, Bekshaev, Bekshaev, Bekshaev, Bekshaev, Bekshaev, Berry, Berry, Born, Dennis, Franke-Arnold, Gibson, He, Heckenberg, Jack, Janke, Karimi, Karimi, Kotlyar, Kotlyar, Leach, Liu, Mair, Mawet, Molina-Terriza, Moreno, Nieminen, Osorio, Padgett, Pas'ko, Prudnikov, Prudnikov, Rozas, S.V. Sviridova, Sacks, Simpson, Slussarenko, Soskin, Swartzlander, Swartzlander, Tamburini, Wang   +48 more
core   +1 more source

Fast Extended Depth-of-Field Reconstruction for Complex Holograms Using Block Partitioned Entropy Minimization

Applied Sciences, 2018
Optical scanning holography (OSH) is a powerful and effective method for capturing the complex hologram of a three-dimensional (3-D) scene. Such captured complex hologram is called optical scanned hologram. However, reconstructing a focused image from an
Peter Wai Ming Tsang, Ting-Chung Poon, Jung-Ping Liu   +2 more
doaj   +1 more source

A new objective quality metric for phase hologram processing

ETRI Journal, 2021
Because of its convenience and compatibility with various image processing techniques, digital image representation of holograms is generally used in digital holography, and thus, quality assessment of digital holograms is an essential issue.
Kwan-Jung Oh, Jinwoong Kim, Hui Yong Kim
doaj   +1 more source