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

Hanyuan Cao; Xuewen Shu

doi:10.1364/ACPC.2016.AS1J.3

Asia Communications and Photonics Conference 2016
OSA Technical Digest (online) (Optica Publishing Group, 2016),
paper AS1J.3
•https://doi.org/10.1364/ACPC.2016.AS1J.3

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

Hanyuan Cao and Xuewen Shu

Asia Communications and Photonics Conference 2016

Wuhan China
2–5 November 2016
ISBN: 978-0-9600380-0-8

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Novel Optical Recording and Application of Ultrafast Optics (AS1J)

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H. Cao and X. Shu, "The Formation of Concentric Rings Induced by Defocusing Femtosecond Laser on Si Surface," in Asia Communications and Photonics Conference 2016, OSA Technical Digest (online) (Optica Publishing Group, 2016), paper AS1J.3.

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Abstract

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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