scholarly journals Anthracene derivatives as broadband nonlinear optical materials: nonlinear absorption and excited-state dynamics analysis

RSC Advances ◽  
2020 ◽  
Vol 10 (34) ◽  
pp. 19974-19981
Author(s):  
Wenfa Zhou ◽  
Yu Fang ◽  
Xingzhi Wu ◽  
Yanbing Han ◽  
Junyi Yang ◽  
...  
Keyword(s):  
Excited State ◽  
Nonlinear Absorption ◽  
Optical Materials ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Nonlinear Optical Materials ◽  
Dynamics Analysis ◽  
Excited State Dynamics ◽  
Anthracene Derivatives

Expanding the π-bridge to adjust the molecular planarity via increasing the amount of ethylene can modulate the nonlinear optical response.

Excited state dynamics of the third-order nonlinear optical response in diphenylhexatriene

1993 ◽  
Author(s):  
D. C. Rodenberger ◽  
Weidong Chen ◽  
Rui-Fang Shi ◽  
Qihou L. Zhou ◽  
Anthony F. Garito
Keyword(s):  
Excited State ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Third Order ◽  
Excited State Dynamics ◽  
The Third

scholarly journals Excited-state dynamics and nonlinear optical response of Ge nanocrystals embedded in silica matrix

2006 ◽  
Vol 88 (18) ◽  
pp. 181901 ◽  
Author(s):  
Luca Razzari ◽  
Andrea Gnoli ◽  
Marcofabio Righini ◽  
Aykutlu Dâna ◽  
Atilla Aydinli
Keyword(s):  
Excited State ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Silica Matrix ◽  
Nonlinear Optical Response ◽  
Excited State Dynamics ◽  
Ge Nanocrystals

scholarly journals Multistability and high reflectance of a mono-layer of three-level quantum emitters with a doublet in the excited state

2019 ◽  
Vol 220 ◽  
pp. 03004
Author(s):  
Davut Bayramdurdiyev ◽  
Ramil Malikov ◽  
Igor Ryzhov ◽  
Victor Malyshev
Keyword(s):  
Excited State ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Frequency Range ◽  
Mono Layer ◽  
High Reflectance ◽  
Quantum Emitters

We study theoretically the nonlinear optical response of a mono-layer of three-level quantum emitters with a doublet in the excited state. It is shown that the layer’s response exhibits multistability. In a certain frequency range, the monolayer operates as a perfect bistable mirror.

scholarly journals Nonlinear optical response of some Graphene oxide and Graphene fluoride derivatives

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Nikolaos Liaros ◽  
Ioannis Orfanos ◽  
Ioannis Papadakis ◽  
Stelios Couris
Keyword(s):  
Graphene Oxide ◽  
Nonlinear Absorption ◽  
Nonlinear Optical ◽  
Nonlinear Refraction ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Third Order ◽  
Nonlinear Properties ◽  
Graphene Derivatives ◽  
532 Nm

AbstractThe nonlinear optical properties of two graphene derivatives, graphene oxide and graphene fluoride, are investigated by means of the Z-scan technique employing 35 ps and 4 ns, visible (532 nm) laser excitation. Both derivatives were found to exhibit significant third-order nonlinear optical response at both excitation regimes, with the nonlinear absorption being relatively stronger and concealing the presence of nonlinear refraction under ns excitation, while ps excitation reveals the presence of both nonlinear absorption and refraction. Both nonlinear properties are of great interest for several photonics, opto-fluidics, opto-electronics and nanotechnology applications.

NONLINEAR OPTICAL RESPONSE AND REVERSE SATURABLE ABSORPTION OF RARE EARTH PHTHALOCYANINE IN DMF SOLUTION

2003 ◽  
Vol 12 (03) ◽  
pp. 367-376 ◽  
Author(s):  
G. A. KUMAR
Keyword(s):  
Rare Earth ◽  
Excited State ◽  
Cross Sections ◽  
Nonlinear Optical ◽  
Excited State Absorption ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Absorption Cross

Nonlinear optical response and reverse saturable absorption behavior of various rare earth phthalocyanines such as Nd , Eu , Sm and La in dimethyl formamide (DMF) solution were studied under high power Nd:YAG laser excitation. Excited state absorption cross-sections and two-photon absorption cross-sections of these systems are measured from the limiting characteristics. The SmHPc 2 system yields maximum value for excited state absorption cross-section and its potential application in DMF as a suitable optical limiter is also discussed.

scholarly journals Ultrafast Nonlinear Optical Response and Carrier Dynamics in Layered Gallium Sulfide (GaS) Single-Crystalline Thin Films

2021 ◽  
Vol 8 ◽  
Author(s):  
Haishuang Lu ◽  
Yu Chen ◽  
Kexin Yang ◽  
Yawei Kuang ◽  
Zhongguo Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Nonlinear Absorption ◽  
Nonlinear Optical ◽  
Transient Absorption ◽  
Optical Response ◽  
Carrier Dynamics ◽  
Nonlinear Optical Response ◽  
Saturable Absorption ◽  
Gallium Sulfide ◽  
Femtosecond Transient Absorption

Gallium sulfide (GaS) is a layered metal monochalcogenide semiconductor that has recently garnered considerable attention in various fields. In this study, we investigated the nonlinear absorption characteristics of multilayer β-GaS thin films on sapphire substrate by using femtosecond open-aperture Z-scan method. The β-GaS films exhibit saturable absorption behavior at 532 nm while nonlinear absorption appears under 650 nm excitation. The nonlinear absorption coefficient of β-GaS was determined to be −1.8 × 10–8 m/W and 4.9 × 10–8 m/W at 532 and 650 nm, respectively. The carrier dynamics of β-GaS films was studied via femtosecond transient absorption (TA) measurements. The TA results demonstrated that β-GaS films have broad photo-induced absorption in the visible regime and sub-nanosecond lifetime. Our results indicate that gallium sulfide has large nonlinear optical response and long carrier lifetime, which could be applied in future photonic devices.

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