Results 41 to 50 of about 4,173 (275)

A thorough study on genetic algorithms in feedback-based wavefront shaping [PDF]

open access: yesJournal of Innovative Optical Health Sciences, 2019
Feedback-based wavefront shaping focuses light through scattering media by employing phase optimization algorithms. Genetic algorithms (GAs), inspired by the process of natural selection, are well suited for phase optimization in wavefront shaping ...
Daixuan Wu   +3 more
doaj   +1 more source

Nonlinear wavefront engineering with metasurface decorated quartz crystal

open access: yesNanophotonics, 2021
In linear optical processes, compact and effective wavefront shaping techniques have been developed with the artificially engineered materials and devices in the past decades.
Mao Ningbin   +12 more
doaj   +1 more source

Fast holographic scattering compensation for deep tissue biological imaging

open access: yesNature Communications, 2021
Wavefront shaping is used to overcome scattering in biological tissues during imaging, but determining the compensation is slow. Here, the authors use holographic phase stepping interferometry, where new phase information is updated after each ...
Molly A. May   +5 more
doaj   +1 more source

Active nonlocal metasurfaces

open access: yesNanophotonics, 2020
Actively tunable and reconfigurable wavefront shaping by optical metasurfaces poses a significant technical challenge often requiring unconventional materials engineering and nanofabrication.
Malek Stephanie C.   +3 more
doaj   +1 more source

Shaping elastic wavefront through zigzag-folded metasurfaces

open access: yesFrontiers in Physics, 2023
We present a reconfigurable elastic metasurface design composed of an array of zigzag-folded sheets with parallel corrugations to control the wavefront of the refracted A0 Lamb mode wave.
Zhenkun Lin, Serife Tol
doaj   +1 more source

Supplementary Data: Model-based wavefront shaping microscopy [PDF]

open access: yes, 2020
Supplementary data for the manuscript titled "Model-based wavefront shaping microscopy": We have developed a new class of model-based wavefront shaping method for imaging through diffuse media.
Knop, T. (Tom)   +7 more
core   +1 more source

Nonlinear wavefront shaping with optically induced three-dimensional nonlinear photonic crystals

open access: yesNature Communications, 2019
Generation of light with desirable amplitude and phase profiles with nonlinear wavefront shaping is important for optical technologies. Here, the authors demonstrate nonlinear wavefront shaping with three-dimensional nonlinear photonic crystals formed by
Shan Liu   +7 more
doaj   +1 more source

Guidestar-free image-guided wavefront-shaping

open access: yes, 2020
Optical imaging through scattering media is a fundamental challenge in many applications. Recently, substantial breakthroughs such as imaging through biological tissues and looking around corners have been obtained by the use of wavefront-shaping ...
Ori Katz (3959183)   +1 more
core   +1 more source

Wavefront shaping through emulated curved space in waveguide settings

open access: yesNature Communications, 2016
Wavefront shaping is typically carried out outside the medium within which the beam is propagating. Sheng et al.exploit concepts inspired by General Relativity for wavefront shaping within optical waveguide settings, constructing narrow collimated beams ...
Chong Sheng   +4 more
doaj   +1 more source

Limiting the incident NA for efficient wavefront shaping through thin anisotropic scattering media [PDF]

open access: yes, 2021
Wave front shaping holds great potential for high-resolution imaging or light delivery either through or deep inside living tissue. However, one of the biggest barriers that must be overcome to unleash the full potential of wavefront shaping for ...
Jin, Hyungwon   +3 more
core   +1 more source

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