Results 31 to 40 of about 1,229,730 (151)
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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Self‐Refraction of Nonlinear Capillary‐Gravity Waves [PDF]
, 1983 Self‐refraction effects have been observed during the propagation of deep‐water capillary‐gravity waves. The observations are shown to be in qualitative agreement with the theory of self‐focusing and defocusing in a cubically nonlinear medium in the ...
Banerjee, Partha P. +2 more
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Deflection of light by a Coulomb charge in Born–Infeld electrodynamics
European Physical Journal C: Particles and Fields, 2021 We study the propagation of light under a strong electric field in Born–Infeld electrodynamics. The nonlinear effect can be described by the effective indices of refraction.
Jin Young Kim
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Low- and High-Order Optical Nonlinearities of Quantum Dots
Photonics, 2022 Various potential applications of quantum dots (QDs) require knowledge of their optical nonlinearities. In this review, the third-order nonlinearities responsible for the saturable absorption, two-photon absorption, reverse saturable absorption, and ...
Rashid A. Ganeev
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Direct observation of an irradiance dependent nonlinear refraction in CVD single layer graphene [PDF]
, 2021 The nonlinear optical properties of single layer graphene are studied via Z-scan. The measurements are carried out at 1045 nm with a 360 femtosecond highly stable Yb doped mode-locked fiber laser.
Demetriou, G. +6 more
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Laser Induced Nonlinear Optical Properties of Zinc Oxide Thin Film Prepared by Sol-Gel Method [PDF]
Журнал нано- та електронної фізики, 2011 Optical nonlinearities of spin coated ZnO thin film have been investigated by using single beam Z-Scan technique in the visible region. X- ray diffraction shows that all films are oriented along the c-axis direction of the hexagonal crystal structure ...
Vinay Kumari +4 more
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Effect of femtosecond laser pulse repetition rate on nonlinear optical properties of organic liquids [PDF]
PeerJ Physical Chemistry, 2019 The effect of the repetition rate of femtosecond laser pulses on the two-photon absorption and nonlinear refraction of pure organic liquids is presented using the conventional Z-scan technique. Such a study provides a way to determine the nature of light-
Sandeep Kumar Maurya +2 more
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Perspectives on nonlinear optics of graphene: Opportunities and challenges
APL Photonics, 2022 The first nonlinear-optical experiments with graphene date back over a decade, and a wide range of research breakthroughs has been reported since then, particularly on the third-order nonlinearities of the material.
Nathalie Vermeulen
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