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Ablation Threshold Measurement and Chemical Modification of UV Nanosecond Laser Micromachining of Polycrystalline Diamond
Author(s) -
Ullah Naveed,
Cui Jianlei,
Dong Xiangyang,
Fang Xuyang,
Dou Jian,
Sun Zheng,
Mei Xuesong
Publication year - 2021
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.202100450
Subject(s) - materials science , laser , nanosecond , surface micromachining , ablation , laser ablation , irradiation , diamond , x ray laser , optoelectronics , ultraviolet , laser beam machining , optics , laser power scaling , composite material , fabrication , medicine , physics , alternative medicine , pathology , laser beams , nuclear physics , aerospace engineering , engineering
The effects of pulsed laser interaction with matter have become a center for research. The pulsed laser has become an indispensable manufacturing tool in the efficient machining of polycrystalline diamond (PCD) and other materials. Herein, the ablation threshold and chemical modification of PCD irradiated using ultraviolet (UV) nanosecond laser is scrutinized. Using a UV nanosecond laser source, a bulk of PCD is ablated in air, and multipulse processing is executed at a wavelength of 355 nm. The ablation threshold of PCD is reported to be ≈3.7326 J cm −2 based on the linear relationship between the laser pulse energy density and the crater diameter, with a Gaussian distribution of the laser intensity on the cross‐section. Furthermore, the sp 3 structure transitioned to the sp 2 graphite phase when the PCD is exposed to UV nanosecond laser irradiation. Consequently, this study provides a theoretical and experimental reference for UV nanosecond laser micromachining of PCD materials in the research and metal‐working industries.