Optical vortex generation by volume holographic elements with embedded phase singularity: Effects of misalignments [PDF]
Ukrainian Journal of Physical Optics, 2013 Based on the linear theory for optical vortex (OV) formation in volume holographic elements (HE) with embedded phase singularity (A. Bekshaev et al., Opt. Commun. 285 (2012) 4005), we analyze theoretically the OV-beams obtained when the incident Gaussian beam axis deviates from the optical axis of the HE.
A Bekshaev +4 more
openaire +1 more source
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
doaj +1 more source
Volume diffraction gratings for optical telecommunications applications: design study for a spectral equalizer [PDF]
, 2004 The main characteristics required for a diffraction grating used for demultiplexing functions in spectral equalizing systems are investigated, both theoretically and experimentally.
Chevallier, Raymond +5 more
core +3 more sources
Volume Holographic Hyperspectral Imaging [PDF]
, 2004 A volume hologram has two degenerate Bragg-phase-matching dimensions and provides the capability of volume holographic imaging. We demonstrate two volume holographic imaging architectures and investigate their imaging resolution, aberration, and ...
Barbastathis, George +2 more
core +1 more source
Performance of MEGARA spectrograph optical elements [PDF]
, 2016 MEGARA is the new IFU and multiobject spectrograph for Gran Telescopio Canarias. The spectograph will offer spectral resolution R-fwhm similar to 6,000, 12,000 and 18,700.
Gallego Maestro, Jesús +2 more
core +2 more sources
Holographic Resonant Laser Printing of metasurfaces using plasmonic template [PDF]
, 2018 Laser printing with a spatial light modulator (SLM) has several advantages over conventional raster-writing and dot-matrix display (DMD) writing: multiple pixel exposure, high power endurance and existing software for computer generated holograms (CGH ...
Carstensen, Marcus S. +5 more
core +3 more sources
Spatial Frequency Response of Epoxy-Based Volume Holographic Recording Material
Molecules, 2019 Holographic volume phase gratings are recorded in an epoxy-based, free-surface, volume holographic recording material. Light-induced gratings are formed by photo-triggered mass migration caused by component diffusion.
Tina Sabel
doaj +1 more source
Experimental demonstration of holographic three-dimensional light shaping using a Gerchberg-Saxton algorithm [PDF]
, 2005 We use a three-dimensional Gerchberg–Saxton algorithm (Shabtay (2003) Opt. Commun. 226 33) to calculate the Fourier-space representation of physically realizable light beams with arbitrarily shaped three-dimensional intensity distributions.
Courtial, J., Whyte, G.
core +3 more sources
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
core +1 more source
Energy Science & Engineering, 2019 Spectrum‐splitting photovoltaics incorporate optical elements to separate sunlight into frequency bands, which can be targeted at solar cells with bandgaps optimized for each sub‐band.
Sunita Darbe +3 more
doaj +1 more source