Independent multichannel wavefront modulation for angle and polarization multiplexing through planar metasurfaces

Sabiha Latif; Nasir Mahmood; Yehia Massoud; Muhammad Qasim Mehmood

doi:10.1117/12.2644777

19 December 2022 Independent multichannel wavefront modulation for angle and polarization multiplexing through planar metasurfaces

Sabiha Latif, Nasir Mahmood, Yehia Massoud, Muhammad Qasim Mehmood

Author Affiliations +

Proceedings Volume 12318, Holography, Diffractive Optics, and Applications XII; 1231808 (2022) https://doi.org/10.1117/12.2644777
Event: SPIE/COS Photonics Asia, 2022, Online Only

Abstract

The rapidly growing demand for miniaturized multifunctional devices and systems constantly brings new structural challenges to the research community. The planar metamaterials (metasurfaces) provide a revolutionary way for wavefront manipulation of electromagnetic waves and promise the achievement of superior degrees of freedom. Compared to conventional refractive optical elements, a distinct advantage of metasurfaces can be accomplished by embedding multi-functionality through encoding various sets of information into a single metasurface. Herein, we proposed a unique angle multiplexing strategy that provides wavefront modulation independently in a flat metasurface by controlling the incidence angle of the input light. The fundamental unit cell of the meta-platform of the proposed structure includes a rectangular tetrad with distinct structural geometry. Due to the proposed geometry's geometrical characteristics, the angle multiplexed phenomena are induced in the structure by the mutual coupling of tetrads made of hydrogenated amorphous silicon (a-Si:H). For the proposed metasurface, we exploited the meta-platform comprised of two Meta-atoms, one for positive incidence angle and another for negative incidence angle of light. To increase the applicability of the metasurface, we proposed a single multifunctional meta-device that will project the image of one information for one angle while another information for the opposite angle of the input light. The angle multiplexing phenomena designed for a wavelength can open promising avenues for real-time applications in switchable multifunctional devices, holography, information encryption, and security purposes.

Conference Presentation

Citation Download Citation

Sabiha Latif, Nasir Mahmood, Yehia Massoud, and Muhammad Qasim Mehmood "Independent multichannel wavefront modulation for angle and polarization multiplexing through planar metasurfaces", Proc. SPIE 12318, Holography, Diffractive Optics, and Applications XII, 1231808 (19 December 2022); https://doi.org/10.1117/12.2644777

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available