Ultrashort double pulse laser ablation of metals

Semerok, A.; Dutouquet, Christophe

doi:10.1016/j.tsf.2003.11.115

Cited by 192 publications

(111 citation statements)

References 14 publications

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“…The simulation result for the dual pulse with t sep < 10 ps is similar to the experimental results by [18,19]; e.g., the ablation depth is similar to that by the single pulse for t sep < 1 ps and smaller for 1ps < t sep < 10 ps. However, for t sep > 10 ps, the experimental result show that the ablation depth decreases with t sep in the range of 10-150 ps.…”

Section: Resultssupporting

confidence: 83%

“…Nanosecond laser pulses separated by several tens of nanoseconds are shown that they can enhance the material removal rates while minimizing the heat-affected zone [16]. Experiments on the ultrashort dual-pulse laser drilling of copper using different wavelengths (800 nm and 532 nm) have also been investigated [18][19][20]. For a pulse separation time longer than 10 ps, the resulting plasma was found to shield the target surface and consequently decrease the ablation rate.…”

Section: Introductionmentioning

confidence: 99%

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Drilling of Copper Using a Dual-Pulse Femtosecond Laser

Cheng

Chen

2016

Technologies

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Abstract:The drilling of copper using a dual-pulse femtosecond laser with wavelength of 800 nm, pulse duration of 120 fs and a variable pulse separation time (0.1-150 ps) is investigated theoretically. A one-dimensional two-temperature model with temperature-dependent material properties is considered, including dynamic optical properties and the thermal-physical properties. Rapid phase change and phase explosion models are incorporated to simulate the material ablation process. Numerical results show that under the same total laser fluence of 4 J/cm 2 , a dual-pulse femtosecond laser with a pulse separation time of 30-150 ps can increase the ablation depth, compared to the single pulse. The optimum pulse separation time is 85 ps. It is also demonstrated that a dual pulse with a suitable pulse separation time for different laser fluences can enhance the ablation rate by about 1.6 times.

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Section: Resultssupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Drilling of Copper Using a Dual-Pulse Femtosecond Laser

Cheng

Chen

2016

Technologies

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“…A good way to improve the performance is to use a femtosecond laser to ablate the sample and nanosecond or picosecond pulses to reheat the plasma [19].…”

Section: Laser Ablation and Plasma Physics Of Libsmentioning

confidence: 99%

Laser-Induced Breakdown Spectroscopy: Fundamentals, Applications, and Challenges

2012

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Laser-induced breakdown spectroscopy (LIBS) is a technique that provides an accurate in situ quantitative chemical analysis and, thanks to the developments in new spectral processing algorithms in the last decade, has achieved a promising performance as a quantitative chemical analyzer at the atomic level. These possibilities along with the fact that little or no sample preparation is necessary have expanded the application fields of LIBS. In this paper, we review the state of the art of this technique, its fundamentals, algorithms for quantitative analysis or sample classification, future challenges, and new application fields where LIBS can solve real problems.

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“…Past experiments show that overlapped double pulses result in an increased ablation depth compared to double pulses with a delay greater than 10 ps. Therefore, the energy does not go into removal of material when a delay between pulses is introduced (Semerok and Dutouquet 2004). The current consensus, in the literature review, indicates this change in energy absorption for different delay times is a result of plasma shielding from the first pulse to interact with the sample surface (Babushok et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Creation of micro/nano surface structures on silver using collinear double femtosecond laser pulses with different pulse separation

Roth

Zuhlke

Peng

et al. 2018

Multiscale and Multidiscip. Model. Exp. and Des.

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Self-organized mound-like micro/nanoscale structures are reported for the first time on silver using a dual-pulse femtosecond laser surface processing technique. The dual-pulse laser processing technique reported in this paper uses femtosecond laser pulse pairs with a controlled temporal delay between the leading and trailing pulses. Using dual pulses at higher fluence values, mound-like micro/nanostructures have been created on silver samples for the first time. Formation of the self-organized microstructures is shown to be dependent on the time delay between the leading and trailing pulses. Mound-like microstructures do not develop on silver for overlapped pulses or using single-pulse femtosecond laser surface processing for the parameter space studied. Subsurface microstructure characterization of a single mound-like surface structure is analyzed by crosssectional analysis using focused ion beam milling followed by scanning electron microscopy and energy dispersive X-ray spectroscopy.

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Ultrashort double pulse laser ablation of metals

Cited by 192 publications

References 14 publications

Drilling of Copper Using a Dual-Pulse Femtosecond Laser

Drilling of Copper Using a Dual-Pulse Femtosecond Laser

Laser-Induced Breakdown Spectroscopy: Fundamentals, Applications, and Challenges

Creation of micro/nano surface structures on silver using collinear double femtosecond laser pulses with different pulse separation

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