Spatial and temporal laser pulse design for material processing on ultrafast scales

R. Stoian, J. P. Colombier, C. Mauclair, G. Cheng, M. K. Bhuyan, P. K. Velpula, P. Srisungsitthisunti

科研成果: 期刊稿件文章同行评审

27 引用 (Scopus)

摘要

The spatio-temporal design of ultrafast laser excitation can have a determinant influence on the physical and engineering aspects of laser-matter interactions, with the potential of upgrading laser processing effects. Energy relaxation channels can be synergetically stimulated as the energy delivery rate is synchronized with the material response on ps timescales. Experimental and theoretical loops based on the temporal design of laser irradiation and rapid monitoring of irradiation effects are, therefore, able to predict and determine ideal optimal laser pulse forms for specific ablation objectives. We illustrate this with examples on manipulating the thermodynamic relaxation pathways impacting the ablation products and nanostructuring of bulk and surfaces using longer pulse envelopes. Some of the potential control factors will be pointed out. At the same time the spatial character can dramatically influence the development of laser interaction. We discuss spatial beam engineering examples such as parallel and non-diffractive approaches designed for high-throughput, high-accuracy processing events.

源语言英语
页(从-至)119-127
页数9
期刊Applied Physics A: Materials Science and Processing
114
1
DOI
出版状态已出版 - 1月 2014
已对外发布

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