Detection and tracking of laser damage on LMJ vacuum windows by digital image correlation

Guillaume Hallo; Chloé Lacombe; Jérôme Néauport; François Hild

doi:10.1117/12.2587171

12 April 2021 Detection and tracking of laser damage on LMJ vacuum windows by digital image correlation

Guillaume Hallo, Chloé Lacombe, Jérôme Néauport, François Hild

Proceedings Volume 11732, Dimensional Optical Metrology and Inspection for Practical Applications X; 117320C (2021) https://doi.org/10.1117/12.2587171
Event: SPIE Defense + Commercial Sensing, 2021, Online Only

Abstract

A novel original method is presented to detect and track laser damage sites on vacuum windows of the Laser MegaJoule (LMJ) facility. The method is based on spatial registration by Digital Image Correlation (DIC). It also involves corrections for gray level variations induced by variable lighting conditions. Using the present method, an efficient way is achieved to detect and follow laser damage sites as soon as they appear on the optical component. The developed tools offer the possibility of characterizing and predicting damage growth as a function of laser shot features.

Conference Presentation

Citation Download Citation

Guillaume Hallo, Chloé Lacombe, Jérôme Néauport, and François Hild "Detection and tracking of laser damage on LMJ vacuum windows by digital image correlation", Proc. SPIE 11732, Dimensional Optical Metrology and Inspection for Practical Applications X, 117320C (12 April 2021); https://doi.org/10.1117/12.2587171

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