Metal ablation study with a 10 picosecond laser under low and median fluence

Cheng, Jian, Cao, Jiali, Huang, Yi, Edwardson, Stuart ORCID: 0000-0001-5239-4409, Perrie, Walter, Dearden, Geoff ORCID: 0000-0003-0648-7473 and Liu, Dun (2020) Metal ablation study with a 10 picosecond laser under low and median fluence. OPTICS AND LASER TECHNOLOGY, 121. p. 105792.

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Official URL: http://dx.doi.org/10.1016/j.optlastec.2019.105792

Abstract

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.

Item Type:	Article
Uncontrolled Keywords:	Picosecond laser processing, Metals and alloys, Modeling of laser ablation
Depositing User:	Symplectic Admin
Date Deposited:	21 Oct 2019 07:41
Last Modified:	19 Jan 2023 00:22
DOI:	10.1016/j.optlastec.2019.105792
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3058910