Birefringent Glass-Engraved Tilted Pillar Metasurfaces for High Power Laser Applications.

ABSTRACT: Birefringent materials-which are highly needed in high power laser systems-may be limited in usage due to the laser-induced damage threshold of traditional birefringent materials. This work reports here on all-glass metasurfaces, fabricated by angled etching through sacrificial metal nanoparticle (NP) etching masks, for generation of effective birefringence in the formed layer. As a result, a fused silica metasurface, monolithic to the underlying substrate, is demonstrated to exhibit a birefringence of 6.57° under 375 nm illumination. Full-wave analysis shows a good agreement with the measurement and presents potential paths forward to increasing the effective metasurface birefringence. This is the first demonstration, to the best of knowledge, of an etching technique to obtain the resulti

SUBMITTER: Ray NJ 

PROVIDER: S-EPMC10460841 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature