Superlens with copper and copper oxide

2022/10/19 by David Ziemkiewicz, Ziemkiewicz, David, Karol Karpiński +3
Engineering · Materials Science · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Nonlinear Optical Materials Research #Nonlinear Optical Materials Studies #Optical Polarization and Ellipsometry #Optics (physics.optics)

paper · pdf · doi:10.48550/arxiv.2210.10376

openalex publication_date 2022/10/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We investigate the imaging properties of copper-based superlens surrounded by copper oxide (Cu₂O). A subwavelength image resolution of the order λ/9 is demonstrated theoretically and verified in numerical simulations. It is shown that the existence of excitons in Cu₂O influence the static and dynamical optical properties of the lens. In particular, an improvement of image quality caused by absorption in the spectral region of excitonic resonances is investigated. The plasmon-exciton interaction in the system may pave the way to a tunable, highly nonlinear superlens designs.

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