飞秒激光直接烧蚀金刚石诱导的纳米结构的形态学研究

Morphological Study of Nanostructures Induced by Direct Femtosecond Laser Ablation on Diamond.

作者信息

Abdelmalek Ahmed, Giakoumaki Argyro N, Bharadwaj Vibhav, Sotillo Belén, Le Phu Thien, Bollani Monica, Bedrane Zeyneb, Ramponi Roberta, Eaton Shane M, Maaza Malik

机构信息

Physics Department, Theoretical Physics Laboratory, Tlemcen University, Tlemcen 13000, Algeria.

Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy.

出版信息

Micromachines (Basel). 2021 May 20;12(5):583. doi: 10.3390/mi12050583.

DOI:10.3390/mi12050583

PMID:34065403

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8160903/

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.

摘要

研究并讨论了在化学气相沉积（CVD）金刚石表面，由脉冲持续时间为230飞秒、重复频率为250千赫兹、波长为1030纳米的飞秒激光诱导产生的高空间频率激光诱导周期性表面结构（HSFL）形态。通过扫描电子显微镜（SEM）、原子力显微镜（AFM）和二维快速傅里叶变换（2D-FFT）对空间改性进行了表征和分析。我们研究了脉冲数和激光功率对纳米结构空间发展的影响，并推导了热积累效应对其形态的影响。已使用广义等离子体模型来跟踪辐照表面的光学演化并确定纳米结构的周期值。我们认为非热熔化和等离子体激发是形成HSFL型纳米结构的主要过程。