Results 31 to 40 of about 6,930 (295)
Nonlinear Refractive Index in Rectangular Graphene Quantum Dots
Applied Sciences, 2019 Alongside its other favorable properties, the large refraction nonlinearity of graphene-related material makes it ideal for use in optoelectronics applications.
Yonggang Qin, Xiaobo Feng, Yu Liu
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Light Refraction is Nonlinear Optimisation
Journal of Mathematical Study, 2021 In this paper, we show that the near field light refraction can be formulated as a nonlinear optimisation problem, both for a point light source and for a parallel light source.
Jiakun Liu, Xu-Jia Wang
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Effect of heavy metals (Ni, Cu, Pb) doped ZnO on the nonlinear optical properties
Materials Research Express, 2020 In this paper, the non-linear optical properties of undoped and doped ZnO thin films were investigated. The films were doped with Ni, Pb, and Cu. an increase in the refractive index against wavelength is apparent for all films up to a certain value of ...
Abeer Salah, Ahmed A Aboud, A M Saad
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Sensitivity optical non-linear measurement based on wide-band phase objects
Frontiers in Materials, 2023 On the basic that the phase object (PO) is the key optical device in the 4f imaging system, a modified high sensitivity optical nonlinear measurement technique with an absorptive homemade phase object (HPO) is reported in order to characterize the value ...
Zhangyang Shao +9 more
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Figure of merit for design of ε-near-zero metamaterials with enhanced Kerrtype nonlinearities [PDF]
EPJ Web of Conferences, 2023 Metamaterials are artificial media designed to display properies going beyond those of ordinary materials. Particularly interesting are ε-near-zero (ENZ) media with real part of the permittivity going to zero in a certain spectral range.
Dodici Francesca +3 more
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Molecules, 2015 meso-Tetraphenylporphyrin (TPP) and its two substituted derivatives (meso-tetrakis(4-cyanophenyl)porphyrin [TPP(CN)4] and meso-tetrakis(4-methoxyphenyl)porphyrin [TPP(OMe)4]) were synthesized.
Guanghong Ao +6 more
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AIP Advances, 2023 As the advancements in the field of artificial intelligence and nonlinear optics continues, new methods can be used to better describe and determine nonlinear optical phenomena. In this research, we aimed to analyze the diffraction patterns of an organic
Behnam Pishnamazi, Ehsan Koushki
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Results in Optics, 2020 A natural pigment Anthocyanin, extracted from blueberry, has been reported in this paper. The structure of blueberry powder was studied by X-ray diffraction (XRD) and it divulges that the prepared powder seems to be amorphous. Fourier transform infrared (
Sivanukkalai Jeyaram +1 more
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Nonlinear Optical Studies of Gold Nanoparticle Films
Nanomaterials, 2019 Gold films are widely used for different applications. We present the results of third- and high-order nonlinear optical studies of the thin films fabricated from Au nanoparticle solutions by spin-coating methods.
Anuradha Rout +7 more
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Design of optical surfaces conform the hyperbolic Monge-Ampère equation [PDF]
EPJ Web of Conferences, 2022 We present a method for designing freeform optical surfaces for illumination optics. By the laws of reflection, refraction and conservation of energy, a fully nonlinear PDE, the Monge-Ampere equation, is derived for the optical surface.
Bertens M.W.M.C. +3 more
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