Experimental demonstration of anamorphic M2 laser transformation in polar coordinates

Alexander Brodsky; Natan Kaplan

doi:10.1117/1.OE.58.6.065106

28 June 2019 Experimental demonstration of anamorphic M² laser transformation in polar coordinates

Alexander Brodsky, Natan Kaplan

Author Affiliations +

Optical Engineering, Vol. 58, Issue 6, 065106 (June 2019). https://doi.org/10.1117/1.OE.58.6.065106

Abstract

Transforming the beam of a highly multimode laser into a narrow annular shape with almost diffraction-limited ring width is a potentially useful technique for certain material processing applications, such as drilling and cutting. In a previous article, we have described and simulated a theoretical method of realizing such transformation. Here, we provide experimental verification of this method, based on transforming the laser beam quality parameter M² in polar coordinates. The transformation is done using a dedicated diffractive optical element, which we call a “spinner.” A comparison of the results for the spinner optical system versus a standard axicon ring shaping has been done, both in the focal plane and in defocus positions. Measured results have been compared with the theoretical model and simulations.

Citation Download Citation

Alexander Brodsky and Natan Kaplan "Experimental demonstration of anamorphic M² laser transformation in polar coordinates," Optical Engineering 58(6), 065106 (28 June 2019). https://doi.org/10.1117/1.OE.58.6.065106

Received: 16 May 2019; Accepted: 13 June 2019; Published: 28 June 2019

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