Authors

D. Zeng; W. P. Latham;A. Kar

Comments

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Abbreviated Journal Title

Opt. Eng.

Keywords

axicon; optical trepanning; annular beam; geometric optics; diffraction; DIFFRACTIVE AXICONS; DESIGN; BEAMS; LENS; LIGHT; ILLUMINATION; ATOMS; FOCUS; Optics

Abstract

An annular beam provides a new laser drilling mechanism, which we refer to as optical trepanning. A refractive axicon system has been designed to transform an input Gaussian laser beam into a collimated annular beam. The diffractive effects of the axicon system and a convex lens focusing the collimated annular beam have been studied using the Fresnel diffraction integral. The theoretical diffraction patterns are compared with the patterns measured with a laser-beam analyzer. The results show that the refractive axicon system can produce Gaussian-like annular beams with the capability of easily adjusting the size of the annular beam.

Journal Title

Optical Engineering

Volume

45

Issue/Number

9

Publication Date

1-1-2006

Document Type

Article

Language

English

First Page

10

WOS Identifier

WOS:000241665800017

ISSN

0091-3286

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