研究目的
To analyze the interaction mechanism of CVD diamond processed by femtosecond laser and reveal the graphitization mechanism.
研究成果
The ablation threshold of ablated diamond under femtosecond laser was determined. The XPS was used to characterize the change of the elements before and after the femtosecond laser ablation of the diamond, and the change of the carbon atom morphology from sp3 to sp2 was verified. The combination of carbon atoms and oxygen atoms makes the content of the two ablation changes significantly. These changes reveal the mechanism of the graphitization phase transition after diamond irradiation.
研究不足
The technical and application constraints of the experiments, as well as potential areas for optimization, are not explicitly mentioned in the paper.
1：Experimental Design and Method Selection:
A 1 kHz femtosecond laser micro/nano processing system was used to prepare diamond graphitized phase transitions and micro/nano structures.
2：Sample Selection and Data Sources:
The diamond sample used was a chemical vapor deposition (CVD) synthetic diamond single crystal sample.
3：List of Experimental Equipment and Materials:
ESCALAB Xi + multi-function X-ray photoelectron spectrometer(XPS), a laser center wavelength of 800 nm, a pulse width of 120 fs, a maximum single pulse energy of 5 mJ.
4：Experimental Procedures and Operational Workflow:
The femtosecond laser processing system layout was used to process diamond in an atmospheric environment.
5：Data Analysis Methods:
The diameter of the ablation micropore varies with the relationship between the single pulse energy and the cumulative ablation pulse number was measured using a scanning electron microscope (SEM).
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