Plasmon-enhanced linear and second-order surface nonlinear optical response of silver nanoparticles fabricated using a femtosecond pulse

2019 ◽  
Vol 31 (3) ◽  
pp. 035305 ◽  
Author(s):  
Lu Zhang ◽  
Fanfan Lu ◽  
Wending Zhang ◽  
Kun Gao ◽  
Tianyang Xue ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Femtosecond Pulse ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Second Order ◽  
Nonlinear Optical Response ◽  
Order Surface

scholarly journals Nonlinear optical absorption of non-spherical silver nanoparticles and organic dyes mixtures

2018 ◽  
Vol 190 ◽  
pp. 04016
Author(s):  
Andrey I. Zvyagin ◽  
Aleksey S. Perepelitsa ◽  
Mariya S. Lavlinskaya ◽  
Oleg V. Ovchinnikov ◽  
Mikhail S. Smirnov ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Optical Absorption ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Photochemical Degradation ◽  
Ag Nps ◽  
Nonlinear Optical Absorption

We study the features of the nonlinear optical response of silver nanoparticles (Ag NPs) of spherical and triangular shapes synthesized using a citrate-borohydride approach and their mixtures with methylene blue (MB+). The Z-scans at the wavelengths of 532 nm using 10 ns pulses were used to analyze the nonlinear optical absorption of MB+ solutions, Ag NPs of different morphology, particularly, the concurrence of saturable and reverse saturable absorption in the solution of triangular Ag NP and MB+. We show the significant contribution to the increasing in the normalized transmittance accomplished by photochemical degradation of the non-spherical Ag NPs (extinction maximum of 600 nm) and transformation into the spherical ones (extinction maximum of 400 nm). The nonlinear light scattering is also analyzed, which showed the contribution to the variation of the sample transmission when it approaches the focal plane. It is shown that the nonlinear optical response is not additive in the mixture of Ag NPs and MB+. The increasing of the nonlinear absorption is probably due to both a change in the population of the triplet states of the dye and the efficiency of photochemical degradation of NPs in the presence of MB+.

Regioregularity Increases Second-Order Nonlinear Optical Response of Polythiophenes in Solution

2015 ◽  
Vol 119 (32) ◽  
pp. 18513-18517 ◽  
Author(s):  
Steven Deckers ◽  
Joost Steverlynck ◽  
Pieter Willot ◽  
Stefaan Vandendriessche ◽  
Guy Koeckelberghs ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Response ◽  
Second Order ◽  
Nonlinear Optical Response

Strain-dependent anisotropic nonlinear optical response in two-dimensional functionalized MXene Sc2CT2 (T = O and OH)

2020 ◽  
Vol 22 (37) ◽  
pp. 21428-21435
Author(s):  
Chuan He ◽  
Qiyi Zhao ◽  
Yuanyuan Huang ◽  
Wanyi Du ◽  
Lipeng Zhu ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Azimuthal Angle ◽  
Nonlinear Coefficient ◽  
Optical Response ◽  
Second Order ◽  
Nonlinear Optical Response ◽  
Two Dimensional ◽  
Strain Dependent

Due to the different contribution of the second-order nonlinear coefficient, the pattern of azimuthal angle-dependent SHG from stained Sc2CT2 monolayers depends highly on the strained states.

scholarly journals Efficient, Thermally Stable, Second Order Nonlinear Optical Response in Organic Hybrid Covalent/Ionic Self-Assembled Films

Langmuir ◽  
2006 ◽  
Vol 22 (13) ◽  
pp. 5723-5727 ◽  
Author(s):  
James R. Heflin ◽  
Matthew T. Guzy ◽  
Patrick J. Neyman ◽  
Kylie J. Gaskins ◽  
Charles Brands ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Response ◽  
Second Order ◽  
Nonlinear Optical Response ◽  
Thermally Stable ◽  
Organic Hybrid ◽  
Self Assembled
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