Wavefront aberration detection of a structured laser beam using artificial intelligence and its application in alignment

Martin Dusek; Jean-Christophe Gayde; Miroslav Sulc

doi:10.1117/12.2676015

28 September 2023 Wavefront aberration detection of a structured laser beam using artificial intelligence and its application in alignment

Martin Dusek, Jean-Christophe Gayde, Miroslav Sulc

Author Affiliations +

Proceedings Volume 12669, Optomechanical Engineering 2023; 126690E (2023) https://doi.org/10.1117/12.2676015
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

The Structured Laser Beam (SLB) is a pseudo-non-diffracting laser beam that shares many characteristics with a Bessel beam. However, it can theoretically propagate over an unlimited distance while maintaining an extremely low inner core divergence of only 0.01 mrad. This makes it a promising candidate for precise longdistance alignment applications such as the alignment of particle accelerator components at CERN. In this work, a novel method to detect low-order wavefront aberrations induced by an SLB generator, that can affect the referential straightness of the beam, is presented. Our approach is based on the analysis of a single intensity distribution of an SLB. The coefficients of the Zernike polynomials are estimated using artificial intelligence before least-squares fitting is used to refine the result. This approach ensures that the fitting avoids local minima. This method provides a novel way to analyze the optical aberrations induced by the SLB generator and estimate the quality of the beam. Furthermore, it has the potential to be used for the alignment of complex lens systems, where an SLB can serve as a reference optical axis to which the other optical elements can be aligned.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Martin Dusek, Jean-Christophe Gayde, and Miroslav Sulc "Wavefront aberration detection of a structured laser beam using artificial intelligence and its application in alignment", Proc. SPIE 12669, Optomechanical Engineering 2023, 126690E (28 September 2023); https://doi.org/10.1117/12.2676015

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