Results 31 to 40 of about 12,991 (264)

Accurate Hologram Generation Using Layer-Based Method and Iterative Fourier Transform Algorithm

IEEE Photonics Journal, 2017
Random phase is always added to the object to diffuse the object light in computer-generated holograms. However, this addition causes considerable speckle noise in the reconstructed image. For improving the speckle noise problem, we propose a new method,
Hui Pang, Jiazhou Wang, Axiu Cao, Man Zhang, Lifang Shi, Qiling Deng   +5 more
doaj   +1 more source

COMPUTER-GENERATED HOLOGRAM ETCHED IN GAAS FOR OPTICAL INTERCONNECTION OF VLSI CIRCUITS [PDF]

, 1992
By integrating, on a wafer plane, GaAs semiconductor optoelectronic modulators and detectors with computer-generated holograms between then, the potential for in-plane interconnections is proposed.
CAREY, CD, LEE, SK, MIDWINTER, JE, SELVIAH, DR, SONG, SH   +4 more
core   +1 more source

Holographic generation of highly twisted electron beams [PDF]

, 2014
Free electrons can possess an intrinsic orbital angular momentum, similar to those in an electron cloud, upon free-space propagation. The wavefront corresponding to the electron's wavefunction forms a helical structure with a number of twists given by ...
Boyd, Robert W., Frabboni, Stefano, Gazzadi, Gian Carlo, Grillo, Vincenzo, Karimi, Ebrahim, Mafakheri, Erfan   +5 more
core   +2 more sources

Perceptually motivated loss functions for computer generated holographic displays

Scientific Reports, 2022
Understanding and improving the perceived quality of reconstructed images is key to developing computer-generated holography algorithms for high-fidelity holographic displays.
Fan Yang, Andrew Kadis, Ralf Mouthaan, Benjamin Wetherfield, Andrzej Kaczorowski, Timothy D. Wilkinson   +5 more
doaj   +1 more source

Observation of self-accelerating Bessel-like optical beams along arbitrary trajectories [PDF]

, 2013
We experimentally demonstrate self-accelerating Bessel-like optical beams propagating along arbitrary trajectories in free space. With computer generated holography, such beams are designed to follow different controllable trajectories while their main ...
Chen, Zhigang, Chremmos, Ioannis, Christodoulides, Demetrios N., Deng, Dongmei, Efremidis, Nikolaos K., Gao, Yuanmei, Liu, Jingjiao, Zhang, Peng, Zhao, Juanying   +8 more
core   +1 more source

Application of Kinoform CGHs to an ID Tag System

IEEE Photonics Journal, 2010
In this paper, we successfully apply multilevel kinoform computer-generated hologram (CGH) patterns, which are recorded on a fine texture paper by a photo printer, into the hologram identification (ID) tag system.
Hye-Rim Kim, Ki-Mun Pak, Ki-Woo Jun, Hyun-Whan Choi, Ji-Song Lim, Yong-Hyub Won   +5 more
doaj   +1 more source

Quantum Computer-Generated Holography

IEEE Access
Hologram calculations pose a significant challenge for future holographic displays with extensive fields of view and wide viewing angles. Classical computers may encounter difficulties with these owing to immense computational demands.
Tomoyoshi Shimobaba, Fan Wang, Tomoyoshi Ito   +2 more
doaj   +1 more source

Partially Overlapping Printing with Digital Filter to Improve Quality of Volume Hologram Printer – Numerical Simulation –

Applied Sciences, 2020
The volume hologram printer is useful for 3D display, because it is selective to the wavelength and be able to reconstruct with the natural illumination.
Hangbo Hua, Takeshi Yamaguchi, Hiroshi Yoshikawa   +2 more
doaj   +1 more source

Robust particle outline extraction and its application to digital on-line holography [PDF]

, 2014
Peer ...
Burns, Nicholas M, Watson, John
core   +1 more source

Influence of the ratio of the intensities of the reference and object waves on the intensity distribution in the holographic field

Научно-технический вестник информационных технологий, механики и оптики
The results of the research focused on the reference and object beam intensity ratio effect on the transmittance of computer-generated and analog holograms are presented.
S. N. Koreshev, S. O. Starovoitov
doaj   +1 more source