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Microprocessing of a steel surface by single pulses of variable width
- Source :
- Laser Physics Letters
- Publication Year :
- 2019
-
Abstract
- Single-pulse microprocessing of a steel surface with a variable pulse width (0.3-12.3 ps) and a wavelength of 515 nm was performed. The morphology of the craters was visualized by a scanning electron microscope and an optical profilometer. The nonmonotonic behavior of ablation thresholds with a minimum at ≈1.5 ps, due to achieving the electron-phonon relaxation time of the absorbed energy in the steel was revealed. It is shown that, with an increase in the pulse width in the considered width range, the efficiency of the ablation decreases by a factor of 2, which is explained by the partial transition from the phase explosion to the surface evaporation. © 2019 Astro Ltd.
- Subjects :
- Surface (mathematics)
electron-phonon thermalization time
Materials science
Physics and Astronomy (miscellaneous)
business.industry
ultrashort laser pulses
02 engineering and technology
single-shot pulse ablation
021001 nanoscience & nanotechnology
01 natural sciences
Variable (computer science)
Optics
0103 physical sciences
ablation efficiency
steel
010306 general physics
0210 nano-technology
business
Instrumentation
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Laser Physics Letters
- Accession number :
- edsair.doi.dedup.....1405c0d75e0fd51e2585af7ea1e2cf39