Results 81 to 90 of about 1,878 (250)
Applied Sciences, 2019 An adjustable optical cage generated by focusing a partially coherent beam with nonconventional correlation function named the Bessel⁻Gaussian correlated Schell-model (BGCSM) beam is investigated in detail. With the help of the generalized Huygens&#
Lina Guo +5 more
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Elementary evaluation of Fresnel's integrals [PDF]
Mathematica Bohemica, 1991 Summary: We evaluate the Fresnel integrals by using the Leibniz rule only on a finite interval.
openaire +1 more source
Nearly 180° Field‐of‐View Metalens for Miniaturized Imaging Systems
Laser &Photonics Reviews, EarlyView.A compact, single‐layer metalens is developed with an ultra‐wide field of view of ≈180 degrees. Utilizing a unique quadratic phase profile, this metalens overcomes traditional issues like axial and color dispersion. It operates across red, green, and blue wavelengths with non‐polarized light, promising enhanced imaging capabilities for integration into
Azhar Javed Satti +9 more
wiley +1 more source
IEEE Access, 2019 In this paper, different diffraction theories for estimating the diffraction field patterns modulated by metasurfaces are firstly revisited. Further reformulation of these theories is performed to better reveal their inherent mechanisms and differences ...
Hongjun Chu +3 more
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Large depth of focus plasmonic metalenses based on Fresnel biprism
AIP Advances, 2020 Plasmonic metalenses are optical elements that are able to shape the amplitude and the phase of light with a high spatial resolution, standing as promising elements for new low-weight imaging technologies.
Adriana Inclán Ladino +6 more
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Laser &Photonics Reviews, EarlyView.A scattering‐robust 3D speckle customization method is proposed to enhance both resolution and imaging depth in scattering tissue. Applied to light‐field microscopy (LFM), it improves 3D resolution by over twofold under strong optical scattering. In wide‐field fluorescence imaging, it enables a substantial improvement in imaging depth, allowing imaging
Yue Xing +4 more
wiley +1 more source
Fast Simulation of Wide‐Angle Coherent Diffractive Imaging
Laser &Photonics Reviews, EarlyView.The propagation multi‐slice Fourier transform method is introduced as an accurate and efficient approach for describing light scattering for arbitrarily shaped objects. Its exceptional suitability for simulating coherent diffractive imaging of nanoparticles in the XUV and soft X‐ray range is demonstrated.
Paul Tuemmler +3 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.This study demonstrates uniform, durable non‐iridescent structural coloration using polystyrene nanoparticles randomly embedded in a thick sodium silicate with absorptive additives. By suppressing the effects of the structure factor and multiple scattering, this approach achieves uniform coloration from the backscattering.
Jihun Kang +3 more
wiley +1 more source
Index of a matrix, complex logarithms, and multidimensional Fresnel integrals [PDF]
, 2020 Pierpaolo Vivo
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Reconfigurable Circularly Polarized Terahertz Emission from vdW Ferroelectric NbOI2
Laser &Photonics Reviews, EarlyView.A controllable chiral terahertz pulse can be generated using a simple dual‐flake vdW ferroelectric NbOI2 emitter in which the polar axes of the two NbOI2 flakes are orthogonal. Both the chirality and the ellipticity can be manipulated by varying the separation distance and the orientations of their polar axes.
Baolong Zhang +3 more
wiley +1 more source