Results 101 to 110 of about 4,697 (265)
Encoding terahertz holographic bits with a computer-generated 3D-printed phase plate
Scientific ReportsA sub-terahertz holographic image of a two-dimensional 576-bit data code is produced using a diffractive phase-plate element. The phase plate was designed using a modified Gerchberg-Saxton iterative algorithm to encode a focused image of the data code ...
E. Constable, J. Gospodaric, A. Pimenov
doaj +1 more source
Microscopic applications of holographic beam shaping and studies of optically trapped aerosols
, 2009 This thesis has two themes. Firstly, it concerns the original application of holographic beam shaping, employed through the methods associated with optical manipulation, to three microscopic fields of research.
Burnham, Daniel R.
core
Volume Holographic Optical Elements as Solar Concentrators
, 2017 In this chapter, we investigate the possibility to realize a holographic solar concentrator by using a new photopolymeric material as recording medium. Therefore, two different configurations of holographic lenses (lenses with spherical and cylindrical ...
Coppola, Giuseppe +11 more
core +1 more source
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)
core +1 more source
Journal of Raman Spectroscopy, EarlyView.The handheld Raman with SSE system efficiently mitigates fluorescence; however, it may also bias the Raman response towards graphitic domains in carbon‐based black pigments, thereby concealing amorphous carbon contributions that are critical for pigment type identification.
Zeynep Alp, Christoph Herm
wiley +1 more source
Limnology and Oceanography: Methods, EarlyView.Abstract Particles sinking from the surface to the deep ocean play a key role in the biological carbon pump, whose efficiency depends partly on sinking velocities. Over the last decade, in situ imaging has enabled critical advances in our understanding of particle dynamics in the ocean.
Manon Laget +5 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.This review summarizes recent progress in meta‐photonics with a focus on bound states in the continuum (BICs) as a powerful platform for light confinement and control. It covers fundamental concepts, design strategies across optical regimes, symmetry breaking for practical quasi‐BICs, tunable and AI‐assisted BIC devices, and emerging applications in ...
Hafiz Saad Khaliq, Hak‐Rin Kim
wiley +1 more source
Laser &Photonics Reviews, EarlyView.Optically confined gold nanorods exhibit cooperative light‐driven dynamics, forming mobile end‐to‐end dimers with orientation‐dependent propulsion. Using structured laser traps and an opto‐thermo‐hydrodynamic model, we uncover how optical binding, polarization‐induced torque, and near‐surface hydrodynamics govern their motion.
José A. Rodrigo, Tatiana Alieva
wiley +1 more source
Design and Analysis of Laser to Fibre Coupling System Using Holographic Optical Element
382-390This paper focuses on design of cost effective, light – weight holographic coupler to couple laser light to optical fibre with reasonably appreciable diffraction efficiency.
Kumar Singh, Ajay +2 more
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Laser &Photonics Reviews, EarlyView.Electrically controlled liquid‐crystal twist diffraction element based on the Pancharatnam–Berry phase enables switchable structural periodicity and simultaneous generation of orthogonal circularly polarized coherent waves for multifunctional planar photonic devices.
Elena Melnikova +7 more
wiley +1 more source