Laser Processing and Chemistry

Bäuerle, D.

doi:10.1007/978-3-662-04074-4

Cited by 891 publications

(477 citation statements)

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“…13 For the electronic parameters of Al we set the coefficient for the specific heat of the electrons C e = γT to γ = 135 J/(m 3 K 2 ), 14 the electron-phonon coupling constant κ = 2.45 · 10 17 J/(m 3 Ks), 14 and the electronic heat conductivity K e = 235 J/(sKm). 15 The sample size for the simulations at the ablation threshold was a box with Melting and ablation depths are determined from x-t histograms of the density (see Fig. 2).…”

Section: B Simulation Details Boundary Conditionsmentioning

confidence: 99%

Simulation of laser ablation in aluminum: the effectivity of double pulses

et al. 2014

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Lasers are becoming a more and more important tool in cutting and shaping materials. Improving precision and effectivity is an ongoing demand in science and industry. One possibility are double pulses. Here we study laser ablation of aluminum by the two-temperature model. There the laser is modeled as a source in a continuum heat conduction equation for the electrons, whose temperature then is transferred to a molecular dynamics particle model by an electron-phonon coupling term.The melting and ablation effectivity is investigated depending on the relative intensity and the time delay between two Gaussian shaped laser pulses. It turns out that at least for aluminum the optimal pulse shapes are standard Gaussian pulses. For double pulses with delay times up to 200 ps we find a behavior as observed in experiment: the ablation depth decreases beyond a delay of 10 ps even if one does not account for the weakening at the second pulse due to laser-plasma interaction.

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Section: B Simulation Details Boundary Conditionsmentioning

confidence: 99%

Simulation of laser ablation in aluminum: the effectivity of double pulses

et al. 2014

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“…Laser chemical processing is a powerful non-contact tool for micro-machining and micro-processing of materials [ 11 ]. Photo-chemically stimulated deposition represents nowadays an attractive alternative for direct material writing without using mask-based photolithography.…”

Section: Methodsmentioning

confidence: 99%

Dissymmetrization of micro-particle surface by laser-induced photochemical deposition

Hugonnot¹,

Delville²,

Delville³

2005

Applied Surface Science

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“…The versatility of PLD also lies in the possibility of obtaining films very adherent to the substrates, even at room temperature and with a high predictable growth rate, which can be precisely controlled through a priori studies of the experimental parameters. Adequate selection of the irradiation conditions, as well as the chemical and physical properties of the target materials, is crucial for the production of very adherent thin films [3][4][5]. Moreover, the choice of substrate temperature may also affect the quality of thin films from the morphological and structural features point of view [6].…”

Section: Introductionmentioning

confidence: 99%

Characterisation of Pb thin films prepared by the nanosecond pulsed laser deposition technique for photocathode application

Lorusso¹,

Gontad²,

Broitman³

et al. 2015

Thin Solid Films

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Pb thin films were prepared by the ns pulsed laser deposition technique on Si (100) and polycrystalline Nb substrates for photocathode application. As the photoemission performances of a cathode are strongly affected by its surface characteristics, the Pb films were grown at different substrate temperatures with the aim of modifying the morphology and structure of thin films. Atomic force microscopy and scanning electron microscopy analyses showed a strong morphological change in the deposited films with the substrate temperature, and the formation of spherical grains at higher temperatures with the nucleation of large voids on the film surface. X-ray diffraction measurements showed that a preferred orientation of Pb (111)

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Laser Processing and Chemistry

Cited by 891 publications

References 0 publications

Simulation of laser ablation in aluminum: the effectivity of double pulses

Simulation of laser ablation in aluminum: the effectivity of double pulses

Dissymmetrization of micro-particle surface by laser-induced photochemical deposition

Characterisation of Pb thin films prepared by the nanosecond pulsed laser deposition technique for photocathode application

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