Results 1 to 10 of about 25,797 (249)
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.
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Holographic microscopy reconstruction in both object and image half spaces with undistorted 3D grid [PDF]
, 2015 We propose an holographic microscopy reconstruction method, which propagates the hologram, in the object half space, in the vicinity of the object. The calibration yields reconstructions with an undistorted reconstruction grid i.e.
Alexandre, Danier +3 more
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Wavefront-based holographic lens optical power model for augmented reality applications
Results in PhysicsThe use of holographic optical elements (HOEs) has grown significantly in recent years, particularly in augmented reality (AR) and see-through display systems. Among them, holographic lenses (HLs) have attracted special interest due to their versatility,
Tomás Lloret +4 more
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Photonics, 2022 Theoretical modelling has been used to calculate the holographic recording beam angles required in air (at any recording wavelength) to produce a Volume Holographic Optical Element (VHOE) for any defined input and output beam angles. The approach is used
Dipanjan Chakraborty +6 more
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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 +4 more
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PhotonicsPhotopolymers, especially acrylate-based ones with low cost and simple preparation, are promising materials for high-efficiency holographic gratings. However, it is still challenging to achieve high-performance gratings, due to the influences of many ...
Ziyan Bai +9 more
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Geometric and physical configurations of meta‐atoms for advanced metasurface holography
InfoMat, 2021 Metasurfaces consisting of subwavelength structures, so‐called meta‐atoms, have steadily attracted considerable attention for advanced holography due to their advantages in terms of high‐resolution holographic images, large field of view, and compact ...
Joohoon Kim +5 more
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Holographic optical scanning elements with minimum aberrations [PDF]
Applied Optics, 1988 An analytical method to design holographic optical elements for focusing laser scanners, especially disk scanners, with minimum aberrations and optimum scan line definition is reported. The results reveal that the focused spot constraint to a straight line is always astigmatic.
Herzig, Hans-Peter, Dändliker, René
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Computer-Generated Holographic Optical Tweezer Arrays
, 2000 Holographic techniques significantly extend the capabilities of laser tweezing, making possible extended trapping patterns for manipulating large numbers of particles and volumes of soft matter.
Dearing, Matthew T. +4 more
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Theory and applications of four-wave mixing in photorefractive media [PDF]
, 1984 The development of a theory of four-wave mixing in photo-refractive crystals is described. This theory is solved in the undepleted pumps approximation with linear absorption and without using the undepleted pumps approximation for negligible absorption ...
Cronin-Golomb, Mark +3 more
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