scholarly journals Plasma-mediated photothermal effects in ultrafast laser irradiation of gold nanoparticle dimers in water

2015 ◽  
Vol 23 (3) ◽  
pp. 1967 ◽  
Author(s):  
Ali Hatef ◽  
Michel Meunier
Keyword(s):  
Laser Irradiation ◽  
Gold Nanoparticle ◽  
Ultrafast Laser ◽  
Photothermal Effects

scholarly journals Cluster Evolution from Ultrafast Laser Irradiation of Gold Nanoparticle: A Molecular Dynamics Study

2020 ◽  
Vol 1428 ◽  
pp. 012004
Author(s):  
Riser Fahdiran ◽  
Iwan Sugihartono ◽  
Erfan Handoko ◽  
Setia Budi ◽  
Herbert M. Urbassek
Keyword(s):  
Molecular Dynamics ◽  
Laser Irradiation ◽  
Gold Nanoparticle ◽  
Ultrafast Laser ◽  
Cluster Evolution

scholarly journals Research on the Response Characteristics of Vanadium Pentoxide Film to the Irradiation of Ultrafast Pulsed Laser

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2078
Author(s):  
Qianqian Shi ◽  
Guodong Zhang ◽  
Yuheng Wang ◽  
Yu Lan ◽  
Jiang Wang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Laser Irradiation ◽  
Vanadium Pentoxide ◽  
Modulation Depth ◽  
Ultrafast Laser ◽  
Stable Phase ◽  
Saturable Absorption ◽  
Third Order ◽  
The Third ◽  
Structural Responses

Vanadium pentoxide (V2O5) is the most stable phase among many transition metal vanadium oxides, and has already been widely used in many fields. In this study, the morphological, structural, and optical responses of V2O5 film to ultrafast laser irradiation was investigated. The third-order nonlinear optical properties of V2O5 film were measured by common Z-scan technique, and the results showed that V2O5 film has self-defocusing and saturable absorption characteristics. The third-order nonlinear absorption coefficient and nonlinear refractive index were calculated to be −338 cm/GW and −3.62 × 10−12 cm2/W, respectively. The tunable saturated absorption with modulation depth ranging from 13.8% to 29.3% was realized through controlling the thickness of vanadium pentoxide film. V2O5 film was irradiated by ultrafast laser with variable pulse energy, and the morphological and structural responses of the V2O5 to the laser with different energy densities were investigated. The irreversible morphological and structural responses of V2O5 films to ultrafast laser irradiation was analyzed using the phase-contrast microscope and Raman spectrum. The chemical structure change from V2O5 to V6O13 was considered the main reason for refractive index modification.

Influence of Surfactant Concentration on Laser-Based Gold Nanoparticle Formation and Stability

2012 ◽  
Vol 65 (2) ◽  
pp. 97 ◽  
Author(s):  
Yuen-Yan Fong ◽  
Jason R. Gascooke ◽  
Gregory F. Metha ◽  
Mark A. Buntine
Keyword(s):  
Critical Micelle Concentration ◽  
Laser Irradiation ◽  
Gold Nanoparticle ◽  
Sodium Dodecylsulfate ◽  
Formation Kinetics ◽  
Transmission Electron ◽  
Bulk Gold ◽  
Microscopy Images ◽  
Apparent Influence

The time evolution of gold nanoparticle (AuNP) yields by in-situ laser irradiation from bulk gold in aqueous solutions containing the surfactant sodium dodecylsulfate (SDS) at concentrations above and below the critical micelle concentration in water is reported. These studies are augmented by transmission electron microscopy images of AuNP samples at each SDS concentration recorded after 90 min of laser irradiation. The results show that while a low concentration of SDS plays a role in the formation kinetics, there is no apparent influence of the SDS concentration around the surfactant critical micelle concentration on particle size during AuNP production.

Ablation dynamics of Co/ZnS targets under double pulse femtosecond laser irradiation

2016 ◽  
Vol 18 (5) ◽  
pp. 3522-3529 ◽  
Author(s):  
Ignacio Lopez-Quintas ◽  
Vincent Loriot ◽  
David Ávila ◽  
Jesus G. Izquierdo ◽  
Esther Rebollar ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Ultrafast Laser ◽  
Double Pulse ◽  
Femtosecond Laser Irradiation ◽  
Pulse Irradiation ◽  
Highly Sensitive ◽  
Ultrafast Laser Pulse

The ablation dynamics of Co/ZnS is highly sensitive to the details of an ultrafast laser pulse irradiation sequence.

Gold Nanoparticles Reshaped by Ultrafast Laser Irradiation Inside a Silica-Based Glass, Studied Through Optical Properties

2012 ◽  
Vol 116 (4) ◽  
pp. 2647-2655 ◽  
Author(s):  
Chaxing Fan ◽  
Bertrand Poumellec ◽  
Huidan Zeng ◽  
Rudy Desmarchelier ◽  
Bernard Bourguignon ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Laser Irradiation ◽  
Ultrafast Laser
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