Gap surface plasmon induced effective diffraction for wide angle of incidence

Sungjae Jin; Kyu-Tae Lee; Bumjin Kim; In-Sub Han; Kang-Yeol Park; Jieun Ryu; Yanghyun Joo

doi:10.1117/12.2688113

5 October 2023 Gap surface plasmon induced effective diffraction for wide angle of incidence

Sungjae Jin, Kyu-Tae Lee, Bumjin Kim, In-Sub Han, Kang-Yeol Park, Jieun Ryu, Yanghyun Joo

Author Affiliations +

Proceedings Volume PC12648, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXI; PC126481V (2023) https://doi.org/10.1117/12.2688113
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Conference Poster

Abstract

In this paper, we present an approach to improving the performance of surface relief type augmented reality (AR) glasses by introducing the gap plasmonic mode at the input coupling grating. Our results demonstrate that the gap plasmonic mode interacts with the incoming light from the light engine, leading to a significant increase in diffraction efficiency at the desired wavelength range. Moreover, the proposed structure exhibits a high diffraction efficiency at a wide angle of incidence, thanks to the magnetic mie resonance mode at the gap plasmonic mode. We used a DOE waveguide consisting of an incoupler and an outcoupler and compared the efficiency by measuring the eyebox efficiency at a certain distance from the outcoupler. The metal used for deposition was silver, and we observed a final efficiency increase of 3-4 times.

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

Citation Download Citation

Sungjae Jin, Kyu-Tae Lee, Bumjin Kim, In-Sub Han, Kang-Yeol Park, Jieun Ryu, and Yanghyun Joo "Gap surface plasmon induced effective diffraction for wide angle of incidence", Proc. SPIE PC12648, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXI, PC126481V (5 October 2023); https://doi.org/10.1117/12.2688113

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