Design and characteristic analysis of shaping optics for optical trepanning

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

doi:10.1117/12.619020

18 August 2005 Design and characteristic analysis of shaping optics for optical trepanning

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

Proceedings Volume 5876, Laser Beam Shaping VI; 58760M (2005) https://doi.org/10.1117/12.619020
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

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.

Citation Download Citation

D. Zeng, W. P. Latham, and A. Kar "Design and characteristic analysis of shaping optics for optical trepanning", Proc. SPIE 5876, Laser Beam Shaping VI, 58760M (18 August 2005); https://doi.org/10.1117/12.619020

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available