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- Title
Morphological Study of Nanostructures Induced by Direct Femtosecond Laser Ablation on Diamond.
- Authors
Abdelmalek, Ahmed; Giakoumaki, Argyro N.; Bharadwaj, Vibhav; Sotillo, Belén; Le Phu, Thien; Bollani, Monica; Bedrane, Zeyneb; Ramponi, Roberta; Eaton, Shane M.; Maaza, Malik; Chen, Feng
- Abstract
High spatial frequency laser induced periodic surface structure (HSFL) morphology induced by femtosecond laser with 230 fs pulse duration, 250 kHz repetition rate at 1030 nm wavelength on CVD diamond surface is investigated and discussed. The spatial modification was characterized and analyzed by Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and 2D-Fast Fourier Transform (2D-FFT). We studied the effect of pulse number and laser power on the spatial development of nanostructures, and also deduced the impact of thermal accumulation effect on their morphology. A generalized plasmonic model has been used to follow the optical evolution of the irradiated surface and to determine the periodic value of the nanostructures. We suggest that non-thermal melting and plasmonic excitation are the main processes responsible for the formation of HSFL-type nanostructures.
- Subjects
LASER ablation; FEMTOSECOND lasers; NANOSTRUCTURES; ATOMIC force microscopy; DIAMOND surfaces; SCANNING electron microscopy
- Publication
Micromachines, 2021, Vol 12, Issue 5, p583
- ISSN
2072-666X
- Publication type
Article
- DOI
10.3390/mi12050583