Numerical simulations for description of UV laser interaction with gold nanoparticles embedded in silica

Bonneau, Florian; Combis, P.; Rullier, Jean-Luc; Vierne, J.; Bertussi, Bertrand; Commandré, Mireille; Gallais, Laurent; Natoli, Jean-Yves; Bertron, Isabelle; Malaise, F.; Donohue, J.T.

doi:10.1007/s00340-003-1387-0

Cited by 33 publications

(23 citation statements)

References 21 publications

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“…Bonneau et al have performed numerical simulations on the damage process of ultraviolet (UV), laser interaction with gold nanoparticles, including energy absorption, crack formation, and propagation leading to craters [19] . Their numerical and experimental results agree well, but the numerical analysis is complicated.…”

Section: Table 1 Main Parameters Used In the Numericalmentioning

confidence: 99%

Thermomechanical analysis of nodule damage in HfO2/SiO2 multilayer coatings

Shan¹,

He²,

Wei³

et al. 2011

中国光学快报

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Samples with nodular defects grown from gold nanoparticles are prepared, and laser-induced damage tests are conducted on them. Nodular defects, which are in critical state of damage, are cross-sectioned by focusing on the ion beam and by imaging using a field emission scanning electron microscope. The crosssectional profile shows that cracks are generated and propagated along the nodular boundaries and the HfO2/SiO2 interface, or are even melted. The thermomechanical process induced by the heated seed region is analyzed based on the calculations of temperature increase and thermal stress. The numerical results give the critical temperature of the seed region and the thermal stress for crack generation, irradiated with threshold fluence. The numerical results are in good agreement with the experimental ones.OCIS Nodular defect, a typical defect in multilayer coatings, largely limits the improvement of the laser-induced damage threshold (LIDT) in the nanosecond regime and thus has been widely investigated. Electric field enhancement in the nodule, induced by the microlens effect of the dome structure of nodular defects, is an important factor in reducing the LIDT [1−5] . Recently, Liu et al. has examined the relationship between the structure feature of the nodular defect and the resistance of laserinduced damage (LID) [6−8] . Some simple thermal stress simulations and a simple thermo-mechanical model had been developed to understand the damage mechanism of the nodular defect [9−11] . The critical condition of crack generation regarded as a damage criterion and the corresponding LIDT were given based on the average temperature of the seed zone. However, the critical temperature of crack generation, the distribution of thermal stress, and the position of crack generation remain to be elucidated.Our previous work focused on investigating the characteristics and the electric field enhancement of nodular defects [12] . The geometric characteristics of nodular defect were determined by the seed. The height of the nodular dome and the continuity of the nodular boundary mainly determine the LIDT. The strong absorptive seed and microlens effect of the nodule play important roles in the LID of the nodule.In this letter, samples with nodular defects grown from gold nanoparticles were prepared, LID tests were performed. The thermomechanical process induced by the heated seed zone was analyzed. The morphology of a critically damaged nodule was analyzed with a double-beam microscope (Auriga, Zeiss, Germang) which combines the functions of the focused ion beam and the field emission scanning electron microscope (FESEM).The preparation of the samples, which are multilayer coatings with gold nanoparticles deposited on the surface of the substrate, and the details of the LID tests have been described in Ref. [12]. The total thickness of the coatings is about 4.0 µm, and the films are deposited by electron beam evaporation. The reflection coefficient of these samples is about 99% at 1 064 nm. The morphologies of nodule ejection ...

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Section: Table 1 Main Parameters Used In the Numericalmentioning

confidence: 99%

Thermomechanical analysis of nodule damage in HfO2/SiO2 multilayer coatings

Shan¹,

He²,

Wei³

et al. 2011

中国光学快报

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“…To represent numerically the interaction between the laser and the metallic target, we used a 1D Lagrangian hydrodynamic code 24 . Solving the Helmholtz wave equation permitted us to determine the electromagnetic field through the region illuminated by the laser.…”

Section: Theoretical Modelmentioning

confidence: 99%

Hydrodynamic simulations of metal ablation by femtosecond laser irradiation

et al. 2005

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Ablation of Cu and Al targets has been performed with 170 fs laser pulses in the intensity range of 10 12 -10 14 W/cm 2 . We compare the measured removal depth with 1D hydrodynamic simulations. The electron-ion temperature decoupling is taken into account using the standard two-temperature model. The influence of the early heat transfer by electronic thermal conduction on hydrodynamic material expansion and mechanical behavior is investigated. A good agreement between experimental and numerical matter ablation rates shows the importance of including solid-to-vapor evolution of the metal in the current modeling of the laser matter interaction.

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“…In order to further assess our previous conclusions about the composition of the gases, numerical simulations have been performed with the multimaterial Arbitrary Lagrangian Eulerian (ALE) package of the Hesione code [29,30]. The subsequent wave trajectories are also presented in Figs.…”

Section: B Analysis Of the Experimental (Rt) Diagramsmentioning

confidence: 99%