Surface oxygen-containing defects of graphene nanosheets with tunable nonlinear optical absorption and refraction

2018 ◽  
Vol 20 (42) ◽  
pp. 27105-27114 ◽  
Author(s):  
Baohua Zhu ◽  
Fangfang Wang ◽  
Peng Li ◽  
Chong Wang ◽  
Yuzong Gu
Keyword(s):  
Optical Absorption ◽  
Nonlinear Optical ◽  
Graphene Nanosheets ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Surface Oxygen ◽  
Nonlinear Optical Absorption

Nonlinear optical response of graphene is weakened whether surface oxygen-containing content is too large or too small.

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+.

Nonlinear optical absorption and ultrafast carrier dynamics of copper antimony sulfide semiconductor nanocrystals

2018 ◽  
Vol 6 (33) ◽  
pp. 8977-8983 ◽  
Author(s):  
Feng Zhang ◽  
Keqiang Chen ◽  
Xiantao Jiang ◽  
Yunzheng Wang ◽  
Yanqi Ge ◽  
...  
Keyword(s):  
Solar Cell ◽  
Optical Absorption ◽  
Nonlinear Optical ◽  
Semiconductor Nanocrystals ◽  
Optical Response ◽  
Carrier Dynamics ◽  
Nonlinear Optical Response ◽  
Antimony Sulfide ◽  
Nonlinear Optical Absorption ◽  
Ultrafast Carrier

Ternary copper antimony sulfide nanocrystals (CAS NCs), a promising solar cell candidate, have been proposed and investigated from the perspective of nonlinear optical response and ultrafast photoinduced carrier dynamics.

Silicon Nanosheets versus Graphene Nanosheets: A Comparison of Their Nonlinear Optical Response

2021 ◽  
Vol 12 (2) ◽  
pp. 815-821
Author(s):  
Michalis Stavrou ◽  
Ioannis Papadakis ◽  
Aristeidis Stathis ◽  
Marc J. Kloberg ◽  
Josef Mock ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Graphene Nanosheets ◽  
Optical Response ◽  
Nonlinear Optical Response

scholarly journals Nonlinear Optical Response of a WS2 Monolayer at Room Temperature upon Multicolor Laser Excitation

ACS Photonics ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 550-556
Author(s):  
Javier Hernandez-Rueda ◽  
Marc L. Noordam ◽  
Irina Komen ◽  
L. Kuipers
Keyword(s):  
Nonlinear Optical ◽  
Room Temperature ◽  
Laser Excitation ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Ws2 Monolayer

Broadband nonlinear optical response of graphdiyne for mid-infrared solid-state lasers

2021 ◽  
Vol 64 (9) ◽  
Author(s):  
MengYu Zong ◽  
YuQian Zu ◽  
Jia Guo ◽  
Zhen Zhang ◽  
JingJing Liu ◽  
...  
Keyword(s):  
Solid State ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Solid State Lasers ◽  
Mid Infrared

Competing hydrogen-bonding interactions in a high-Tc organic molecular-ionic crystal with evident nonlinear optical response

CrystEngComm ◽  
2021 ◽  
Vol 23 (13) ◽  
pp. 2509-2512
Author(s):  
Wen-Tao Xu ◽  
Jun-Chao Liu ◽  
Yu-Ling Zeng ◽  
Hua Zhang ◽  
Zhong-Xia Wang
Keyword(s):  
Phase Transition ◽  
Hydrogen Bonding ◽  
Ionic Crystal ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
High Tc ◽  
Hydrogen Bonding Interactions ◽  
Nlo Response

An organic molecular-ionic crystal of (TPPO–H)2SO4 exhibits moderate NLO response which is twice that of KDP and competing hydrogen-bonding interactions triggered high-Tc phase transition.

Manipulation of Ultrafast Nonlinear Optical Response Based on Surface Plasmon Resonance

2021 ◽  
pp. 2100847
Author(s):  
Yonglin He ◽  
Weimin Yang ◽  
Tien‐Mo Shih ◽  
Jingyu Wang ◽  
Dumeng Zhang ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response
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