Influence of the multilayer dielectric design on the laser damage resistance of pulse-compression gratings

Saaxewer B. Diop; Nicolas Bonod; Marine Chorel; Éric Lavastre; Nadja Roquin; Lilian Heymans; Pierre Brianceau; Laurent Gallais; Laurent Lamaignère

doi:10.1117/12.2685304

24 November 2023 Influence of the multilayer dielectric design on the laser damage resistance of pulse-compression gratings

Saaxewer B. Diop, Nicolas Bonod, Marine Chorel, Éric Lavastre, Nadja Roquin, Lilian Heymans, Pierre Brianceau, Laurent Gallais, Laurent Lamaignère

Author Affiliations +

Proceedings Volume 12726, Laser-Induced Damage in Optical Materials 2023; 1272607 (2023) https://doi.org/10.1117/12.2685304
Event: SPIE Laser Damage, 2023, Dublin/Livermore, California, United States

Abstract

Multilayer dielectric (MLD) gratings provide high diffraction efficiency and a high damage threshold. They represent the main solution to compressing a high-power laser beam. However, the laser resistance of MLD gratings limits the power of such facilities. The community devoted a lot of resources to increasing the damage threshold of those components. Today, it is well known that the etching profile plays a key role in the electric field distribution and consequently the laser resistance. In this paper, we focused our optimization on the multilayer dielectric stack to increase the laser-induced damage threshold (LIDT). We numerically and experimentally demonstrated the impact of the MLD stack on the electric field distribution and the LIDT. We manufactured two sets of three samples with identical etching profiles. The calculated electric field intensities were in good agreement with the measured LIDTs. These results demonstrated how to further optimize grating designs through the dielectric stack.

Conference Presentation

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

Citation Download Citation

Saaxewer B. Diop, Nicolas Bonod, Marine Chorel, Éric Lavastre, Nadja Roquin, Lilian Heymans, Pierre Brianceau, Laurent Gallais, and Laurent Lamaignère "Influence of the multilayer dielectric design on the laser damage resistance of pulse-compression gratings", Proc. SPIE 12726, Laser-Induced Damage in Optical Materials 2023, 1272607 (24 November 2023); https://doi.org/10.1117/12.2685304

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