Diffractive X-ray Telescopes [PDF]
, 2010 Diffractive X-ray telescopes using zone plates, phase Fresnel lenses, or related optical elements have the potential to provide astronomers with true imaging capability with resolution several orders of magnitude better than available in any other ...
Skinner, Gerald K.
core +3 more sources
Multifocal versus monofocal intraocular lenses after cataract extraction. [PDF]
, 2012 BACKGROUND: Good unaided distance visual acuity is now a realistic expectation following cataract surgery and intraocular lens (IOL) implantation. Near vision, however, still requires additional refractive power, usually in the form of reading glasses ...
Alio +60 more
core +2 more sources
Ultrathin, polarization-independent, and focus-tunable liquid crystal diffractive lens for augmented reality [PDF]
, 2019 Despite the recent advances in augmented reality (AR), which has shown the potential to significantly impact on our daily lives by offering a new way to manipulate and interact with virtual information, minimizing visual discomfort due to the vergence ...
Mareddi Bharath Kumar +8 more
semanticscholar +1 more source
Dynamic freeform diffractive lens
Optica, 2023 In the framework of the scalar theory of diffraction a surface-pixeled convergent lens for arbitrary amplitude and phase modulation along the depth of focus is introduced. This complex diffractive lens is computer-generated from an exact solution of the inverse focal shaping problem obtained by using the Fresnel diffraction integral.
openaire +1 more source
Test of mode-division multiplexing and demultiplexing in free-space with diffractive transformation optics [PDF]
, 2017 open5openGIANLUCA RUFFATO, 1; FILIPPO ROMANATO, ; 1Department of Physics and Astronomy ‘G. Galilei’, University of Padova; 2Laboratory for Nanofabrication of Nanodevices, c.so Stati Uniti 4GIANLUCA RUFFATO, 1; Romanato, Filippo; Ruffato, Gianluca ...
core +1 more source
Optical design and performance of a trifocal sinusoidal diffractive intraocular lens.
Biomedical Optics Express, 2021 Two theoretical sinusoidal diffractive profile models to build up a trifocal intraocular lens (IOL) are analysed. Topographic features of the diffractive zones such as their shape, step height and radii, as well as the energy efficiency (EE) of the foci,
F. Vega +3 more
semanticscholar +1 more source
Ultra-thin near infrared camera enabled by a flat multi-level diffractive lens.
Optics Letters, 2019 We experimentally demonstrate a ∼1-mm-thick near infrared camera comprised of a multi-level diffractive lens coupled with a conventional monochrome image sensor.
Sourangsu Banerji +5 more
semanticscholar +1 more source
Scattering of gravitational radiation: second order moments of the wave amplitude [PDF]
, 2004 Gravitational radiation that propagates through an inhomogeneous mass distribution is subject to random gravitational lensing, or scattering, causing variations in the wave amplitude and temporal smearing of the signal.
Armstrong +25 more
core +3 more sources
Compressive Spectral Imaging with Diffractive Lenses
, 2019 Compressive spectral imaging enables to reconstruct the entire three-dimensional (3D) spectral cube from a few multiplexed images. Here, we develop a novel compressive spectral imaging technique using diffractive lenses.
Kar, Oğuzhan Fatih, Oktem, Figen S.
core +1 more source
Ionization waves of arbitrary velocity driven by a flying focus
, 2017 A chirped laser pulse focused by a chromatic lens exhibits a dynamic, or "flying," focus in which the trajectory of the peak intensity decouples from the group velocity.
Bahk, S. -W. +7 more
core +1 more source