Advancing spectral resolution with ultracompact helicity multiplexed all-dielectric metadevice

Naureen Butt; Nasir Mahmood; Tauseef Tauqeer; Muhammad Qasim Mehmood

doi:10.1117/12.3022108

10 June 2024 Advancing spectral resolution with ultracompact helicity multiplexed all-dielectric metadevice

Naureen Butt, Nasir Mahmood, Tauseef Tauqeer, Muhammad Qasim Mehmood

Author Affiliations +

Proceedings Volume 12991, Nanophotonics X; 129911W (2024) https://doi.org/10.1117/12.3022108
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Conference Poster

Abstract

Dispersion management plays a critical role in advancing spectrometers, which are indispensable tools for comprehending various optical phenomena, such as Raman scattering and fluorescence. Spectrometers investigate spectral changes under light-matter interaction, targeting many real-life applications extending from food safety and disease diagnostics to environmental monitoring. Unlike their bulkier predecessors, compact spectrometers have significant potential for enhanced versatility and wearable optics. This study proposes a zinc sulfide-based, all-dielectric super dispersive, Circular Polarization (CP) discriminator metalens. The dispersion-controlled metalens is an integral component of compact spectrometers, with focal spots residing on the same plane and undergoing minimal broadening across the visible spectrum (i.e., 475 − 650 nm). Moreover, the proposed device fulfills an additional role as a CP filter, permitting one state to focus on the intended position while simultaneously defocusing the other. In practice, incorporating a novel spin-decoupling approach with wavelength and phase multiplexing equips the proposed device to provide optimal spectral resolving performance with helicity-resolved capabilities, making it a multifunctional state-of-the-art meta-spectrometer. We are confident that the proposed device effectively merges various advanced features, positioning it as a promising addition to spectrometry.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Naureen Butt, Nasir Mahmood, Tauseef Tauqeer, and Muhammad Qasim Mehmood "Advancing spectral resolution with ultracompact helicity multiplexed all-dielectric metadevice", Proc. SPIE 12991, Nanophotonics X, 129911W (10 June 2024); https://doi.org/10.1117/12.3022108

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