期刊
OPTICS AND LASER TECHNOLOGY
卷 121, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2019.105792
关键词
Picosecond laser processing; Metals and alloys; Modeling of laser ablation
资金
- National Natural Science Fund of China [51405141, 51575164]
Single shot 10 ps laser ablation on aluminium and gold at a wavelength of 1064 nm under low and median laser fluence was studied theoretically and experimentally. Simulations have been performed by using an optimized two temperature model. It is revealed that electron-phonon coupling ability of the target metal affected both the ablation depth and target metal's morphology. Under low fluence, melting could well be the relevant ablation mechanism. With laser fluence rising, vaporization or phase explosion happens thereafter, depending on material's electron-phonon coupling ability.
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