Tuning the asymmetric response of metasurfaces for optical spatial filtering

Timothy J. Davis; Fatima Eftekhari; Daniel E. Gómez; Ann Roberts

doi:10.1117/12.2539797

30 December 2019 Tuning the asymmetric response of metasurfaces for optical spatial filtering

Timothy J. Davis, Fatima Eftekhari, Daniel E. Gómez, Ann Roberts

Proceedings Volume 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019; 1120008 (2019) https://doi.org/10.1117/12.2539797
Event: ANZCOP, 2019, Melbourne, Australia

Abstract

The spatial filtering of optical signals has been demonstrated previously with metasurface thin-films created from arrays of structured optical elements. We consider the problem of changing the symmetry of their response with changes to the in-plane wavevector k_I→-k_I and show it can be tailored or even dynamically tuned. Our work is based on a general theory of metasurfaces constructed from non-diffracting arrays of coupled metal particles. We present the optical transfer function of such a metasurface, identify the physical properties essential for asymmetry and demonstrate its behaviour experimentally.

Citation Download Citation

Timothy J. Davis, Fatima Eftekhari, Daniel E. Gómez, and Ann Roberts "Tuning the asymmetric response of metasurfaces for optical spatial filtering", Proc. SPIE 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019, 1120008 (30 December 2019); https://doi.org/10.1117/12.2539797

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