The Formation of Concentric Rings Induced by Defocusing Femtosecond Laser on Si Surface

We have observed the formation of the concentric rings on silicon surface induced by defocusing femtosecond laser. We develop a method to illustrate that the formation of such rings is attributed to the Fresnel diffraction.

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Bibliographic Details
Published in2016 Asia Communications and Photonics Conference (ACP) pp. 1 - 3
Main Authors Cao, Hanyuan, Shu, Xuewen
Format Conference Proceeding
LanguageEnglish
Published OSA 01.11.2016
Subjects
Laser ablation
Laser beams
Laser theory
Lenses
Ring lasers
Surface emitting lasers
Ultrafast optics
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Summary:We have observed the formation of the concentric rings on silicon surface induced by defocusing femtosecond laser. We develop a method to illustrate that the formation of such rings is attributed to the Fresnel diffraction.
ISSN:2162-1098
DOI:10.1364/ACPC.2016.AS1J.3