Results 31 to 40 of about 65,086 (261)

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
doaj   +1 more source

Using Femtosecond Laser Pulses to Explore the Nonlinear Optical Properties of Au NP Colloids That Were Synthesized by Laser Ablation

Nanomaterials, 2022
In this study, we experimentally investigated the nonlinear optical properties of Au nanoparticles (Au NPs) that were prepared in pure distilled water using the laser ablation method.
Mohamed Ashour, Hameed G. Faris, Hanan Ahmed, Samar Mamdouh, Kavintheran Thambiratnam, Tarek Mohamed   +5 more
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Nonlinear Terahertz Absorption of Graphene Plasmons [PDF]

Nano Letters, 2016
Subwavelength graphene structures support localized plasmonic resonances in the terahertz and mid-infrared spectral regimes. The strong field confinement at the resonant frequency is predicted to significantly enhance the light-graphene interaction, which could enable nonlinear optics at low intensity in atomically thin, subwavelength devices. To date,
Jadidi, M. M., König-Otto, J. C., Winnerl, S., Sushkov, A. B., Drew, H. D., Murphy, T. E., Mittendorff, M.   +6 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, Ganjaboy S. Boltaev, Rashid A. Ganeev, Yue Fu, Sandeep Kumar Maurya, Vyacheslav V. Kim, Konda Srinivasa Rao, Chunlei Guo   +7 more
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Polarization Z-Scan Studies Revealing Plasmon Coupling Enhancement Due to Dimer Formation of Gold Nanoparticles in Nematic Liquid Crystals

Micromachines, 2023
We investigate the plasmon coupling of gold nanoparticle (AuNP) dimers dispersed in a nematic liquid crystal matrix using the polarization z-scan technique.
Shengwei Wang, Edward J. Lipchus, Mohamed Amine Gharbi, Chandra S. Yelleswarapu   +3 more
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Tunneling induced absorption with competing Nonlinearities [PDF]

Scientific Reports, 2016
AbstractWe investigate tunneling induced nonlinear absorption phenomena in a coupled quantum-dot system. Resonant tunneling causes constructive interference in the nonlinear absorption that leads to an increase of more than an order of magnitude over the maximum absorption in a coupled quantum dot system without tunneling. Resonant tunneling also leads
Yandong Peng, Aihong Yang, Yan Xu, Peng Wang, Yang Yu, Hongju Guo, Tingqi Ren   +6 more
openaire   +2 more sources

Focusing at a Point and Absorption of Nonlinear Oscillations [PDF]

Transactions of the American Mathematical Society, 1995
Several recent papers give rigorous justifications of weakly nonlinear geometric optics. All of them consider oscillating wave trains on domains where focusing phenomena do not exist, either because the space dimension is equal to one, or thanks to a coherence assumption on the phases.
Joly, J. L., Métivier, G., Rauch, J.
openaire   +1 more source

Multi-Foci Laser Separation of Sapphire Wafers with Partial Thickness Scanning

Micromachines, 2022
With multi-foci laser cutting technology for sapphire wafer separation, the entire cross-section is generally scanned with single or multiple passes. This investigation proposes a new separation technique through partial thickness scanning.
Celescia Siew Mun Lye, Zhongke Wang, Yee Cheong Lam   +2 more
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Formation of plasmon-exciton nanostructures based on quantum dots and metal nanoparticles with a nonlinear optical response

Конденсированные среды и межфазные границы, 2023
The establishment of the conditions for the formation of nanostructures with plasmon-exciton interaction based onquantum dots and plasmonic nanoparticles that provide unique nonlinear optical properties is an urgent task.
Andrey I. Zvyagin, Tamara A. Chevychelova, Aleksey S. Perepelitsa, Mikhail S. Smirnov, Oleg V. Ovchinnikov   +4 more
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Nonlinear Optical Properties Tuning in Meso-Tetraphenylporphyrin Derivatives Substituted with Donor/Acceptor Groups in Picosecond and Nanosecond Regimes

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, Zhengguo Xiao, Xuemin Qian, Zhongguo Li, Yuxiao Wang, Xueru Zhang, Yinglin Song   +6 more
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