Results 41 to 50 of about 562,479 (274)

Optical Cryptanalysis Method Using Wavefront Shaping

open access: yesIEEE Photonics Journal, 2017
Optical techniques for information security have drawn a lot of attention in recent years. The development of cryptanalysis strategies will also have a positive promotion for the cryptosystems themselves.
Meihua Liao   +3 more
doaj   +1 more source

The Shapes of Clines and Wavefronts

open access: yesMolecular Ecology
ABSTRACT Cline theory has a central place in speciation studies. Cline locations delimit taxon boundaries, cline widths scale with barrier strength, and the shapes of clines (smooth or stepped) suggest whether species barriers are mono‐ or polygenic.
Stuart Baird, Nina Daley
openaire   +3 more sources

High quality factor metasurfaces for two-dimensional wavefront manipulation

open access: yesNature Communications, 2023
The strong interaction of light with micro- and nanostructures plays a critical role in optical sensing, nonlinear optics, active optical devices, and quantum optics.
Claudio U. Hail   +4 more
doaj   +1 more source

Deep learning assisted optical wavefront shaping in disordered medium

open access: yes, 2019
Wavefront shaping (WFS) has been put forward several years ago to break the limitation caused by optical scattering in inhomogeneous medium, and realize optical focusing in disordered medium like biological tissues.
Luo, Yunqi   +9 more
core   +1 more source

A comparative study of optimization algorithms for wavefront shaping [PDF]

open access: yesJournal of Innovative Optical Health Sciences, 2019
By manipulating the phase map of a wavefront of light using a spatial light modulator, the scattered light can be sharply focused on a specific target.
Zahra Fayyaz   +4 more
doaj   +1 more source

Mesoscopic theory of optical wavefront shaping to focus deep inside opaque media [PDF]

open access: yesEPJ Web of Conferences
We describe the theory of optical wavefront shaping, where waves are focused to a predefined focal point deep inside a disordered three-dimensional (3D) opaque medium (e.g., tissue, paint, foam) by shaping the wavefield sent by N external array elements.
van Tiggelen Bart A.   +2 more
doaj   +1 more source

Efficient Switchable Common Path Interferometer for Transmission Matrix Characterization of Scattering Medium

open access: yesIEEE Photonics Journal, 2022
Transmission matrix can be used as an elegant tool to represent the light transmission characteristics of a scattering medium. In this paper, we propose a novel common path interferometer technique to measure the transmission matrix utilizing the ...
Han Gao   +4 more
doaj   +1 more source

Coherent Raman Generation Controlled by Wavefront Shaping [PDF]

open access: yesScientific Reports, 2019
AbstractWe investigate the possibility of tailoring coherent Raman generated spectra via adaptive wavefront optimization. Our technique combines a spatial light modulator and a spectrometer providing a feedback loop. The algorithm is capable of controlling the Raman generation, producing broader spectra and an improved overall efficiency, and ...
Shutova, Mariia   +4 more
openaire   +2 more sources

Monte Carlo simulation of interferometric measurement and wavefront shaping under influence of shot noise and camera noise

open access: yesJPhys Photonics
Interferometry often serves as an essential building block of wavefront shaping systems to obtain optimal wavefront solutions. In this tutorial, we provide a Monte Carlo simulation tool to calculate the accuracy of interferometric measurements and its ...
Chunghyeong Lee   +3 more
doaj   +1 more source

Improving Depth Sensitive Fluorescence Spectroscopy With Wavefront Shaping by Spectral and Spatial Filtering

open access: yesIEEE Access, 2019
Depth sensitive optical spectroscopy preferentially detects optical spectra from different depths in layered samples, which plays a crucial role in many applications such as the optical diagnosis of epithelial precancer and cancer.
Chao-Mao Hsieh, Manish Verma, Quan Liu
doaj   +1 more source

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