Results 21 to 30 of about 219,223 (311)
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
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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
Optics Express, 2020 In this paper, we propose a fast calculation method using look-up table and wavefront-recording plane. Wavefront-recording plane method consists of two steps: the first step is the calculation of a wavefront-recording plane which is placed between the ...
Dapu Pi +4 more
semanticscholar +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
Weighted Constraint Iterative Algorithm for Phase Hologram Generation
Applied Sciences, 2020 A weighted constraint iterative algorithm is presented to calculate phase holograms with quality reconstruction. The image plane is partitioned into two regions where different constraint strategies are implemented during the iteration process.
Lizhi Chen +5 more
doaj +1 more source
Applied Sciences, 2021 Computer-generated hologram (CGH) null correctors are used as accuracy standards for interferometric measurements of optical surfaces and optical systems.
Yingying Bai +5 more
doaj +1 more source
Binary Computer-Generated Holograms by Simulated-Annealing Binary Search
Photonics, 2022 The binary computer-generated hologram (BCGH) has attracted much attention recently because it can address the high-speed binary spatial light modulator (SLM), such as a digital micromirror device (DMD) SLM.
Jung-Ping Liu, Chen-Ming Tsai
doaj +1 more source
Monochrome Image Hologram (MIH)
مجلة بغداد للعلوم, 2008 A new computer-generated optical element called a monochrome image hologram (MIH) is described. A real nonnegative function to represent the transmittance of a synthesized hologram is used.
Baghdad Science Journal
doaj +1 more source
Reversible Mode Switching in Y coupled Terahertz Lasers [PDF]
, 2013 Electrically independent terahertz (THz) quantum cascade lasers (QCLs) are optically coupled in a Y configuration. Dual frequency, electronically switchable emission is achieved in one QCL using an aperiodic grating, designed using computer-generated ...
Beere, Harvey E. +4 more
core +2 more sources