Title

Design And Characteristic Analysis Of Shaping Optics For Optical Trepanning

Keywords

Axicon; Kirchhoff- Fresnel diffraction; Optical trepanning; Ray tracing

Abstract

Optical trepanning is a new laser drilling method using an annular beam. The annular beams allow numerous irradiance profiles to supply laser energy to the workpiece and thus provide more flexibility in affecting the hole quality than a traditional circular laser beam. The refractive axicon system has been designed to generating a collimated annular beam. In this article, calculations of intensity distributions produced by this refractive system are made by evaluating the Kirchhoff- Fresnel diffraction. It is shown that the refractive system is able to transform a Gaussian beam into a full Gaussian annular beam. The base angle of the axicon lens, input laser beam diameter and intensity profiles are found to be important factors for the axcion refractive system. Their effects on the annular beam profiles are analyzed based on the numerical solutions of the diffraction patterns.

Publication Date

12-29-2005

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

5876

Number of Pages

1-9

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.619020

Socpus ID

29244459454 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/29244459454

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