Results 61 to 70 of about 5,837,988 (197)
Holographic optical elements: Fabrication and testing [PDF]
, 1974 The basic properties and use of holographic optical elements were investigated to design and construct wide-angle, Fourier-transform holographic optical systems for use in a Bragg-effect optical memory. The performance characteristics are described along
Zech, R. G., Shareck, M., Ralston, L. M.
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Optically controlled grippers for manipulating micron-sized particles [PDF]
, 2007 We report the development of a joystick controlled gripper for the real-time manipulation of micron-sized objects, driven using holographic optical tweezers (HOTs).
Barron, L. +14 more
core +1 more source
Holography and photopolymer recording materials [PDF]
, 2010 Paper presented at Fundamental Advances in Holography II (DMB), Digital Holography and Three-Dimensional Imaging (DH) conference, Miami, Florida, April 11, 2010Photopolymers act as drivers and enabler of fabrication technologies for applications ...
John T. Sheridan, Sheridan, John T.
core +2 more sources
Investigation of uses of holographic optical elements [PDF]
, 1973 The data represent a thorough study of the aberrations and imaging properties of holographic optical elements. Principle studies include (1) the indepth experimental investigation of single holographic optical elements, (2) the verification of the ...
Zech, R. G., Latta, J. N.
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Curved Holographic Optical Elements from a Geometric View Point
, 2020 We present a geometric framework to model the optical effects of deformations of planar holographic optical elements (HOE) into curved surfaces, such as sphere segments.
Tobias Graf (5514566)
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Entropy-based study of imaging quality in holographic optical elements [PDF]
, 1994 A method for obtaining the best image plane for holographic optical elements by the use of the concept of entropy is described. This method is applied to in-line holographic lenses with different values of spherical aberration.
Carretero López, Luis +3 more
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Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective
Advanced Electronic Materials, EarlyView.Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe +4 more
wiley +1 more source
Comparison of holographic photopolymer materials by use of analytic nonlocal diffusion models [PDF]
, 2002 The one-dimensional diffusion equation governing holographic grating formation in photopolymers, which includes both nonlocal material response and generalized dependence of the rate of polymerization on the illuminating intensity, has been previously ...
Lawrence, Justin R. +3 more
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Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems
Advanced Electronic Materials, EarlyView.Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang +9 more
wiley +1 more source
Multifacet holographic optical elements [PDF]
, 1981 New types of holographic optical elements, combining the flexibility of computer generated holograms with the large space bandwidth product and high diffraction efficiency of interferometrically recorded volume phase holograms, are demonstrated.
Haugen, P. R., Case, S. K.
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