Helicity multiplexed wavefront shaping at broadband ultraviolet regime

Aqsa Asad; Hafiz Saad Khaliq; Nasir Mahmood; Yehia Massoud

doi:10.1117/12.2644776

19 December 2022 Helicity multiplexed wavefront shaping at broadband ultraviolet regime

Aqsa Asad, Hafiz Saad Khaliq, Nasir Mahmood, Yehia Massoud

Proceedings Volume 12318, Holography, Diffractive Optics, and Applications XII; 1231807 (2022) https://doi.org/10.1117/12.2644776
Event: SPIE/COS Photonics Asia, 2022, Online Only

Abstract

Here in this paper, we proposed a metasurface, which consists of silicon nitride as dielectric material possessing a high transparent window in the ultraviolet regime. We designed a single-layer dual-band metasurface instead of stacking and interleaved technique to overcome noise and low resolution, which gives broadband response for UV wavelengths. The proposed spin multiplexed metasurface is capable of generating two independent holographic images for right circularly polarized (RCP) and left circularly polarized (LCP) light. We achieved maximum cross-polarization efficiency on the designed wavelength i.e. 350nm and negligible zero-order efficiency. The unit cell and the proposed metasurface are simulated using Finite Difference Time Domain-based FDTD Solution from Lumerical Inc. for the specific wavelength while it gives broadband response for the wavelength band almost covering 290nm to 390nm.

Conference Presentation

Citation Download Citation

Aqsa Asad, Hafiz Saad Khaliq, Nasir Mahmood, and Yehia Massoud "Helicity multiplexed wavefront shaping at broadband ultraviolet regime", Proc. SPIE 12318, Holography, Diffractive Optics, and Applications XII, 1231807 (19 December 2022); https://doi.org/10.1117/12.2644776

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