Subwavelength waveguide arrays and metasurfaces for spatial phase manipulation of electromagnetic waves

Marco Rahm; Alexander Wolff; Dominic Palm; Steffen Klingel; Janis Krieger; Lukas Mueller; Lars Franke; Jan Kappa; Ralf Stemler

doi:10.1117/12.2681878

6 October 2023 Subwavelength waveguide arrays and metasurfaces for spatial phase manipulation of electromagnetic waves

Marco Rahm, Alexander Wolff, Dominic Palm, Steffen Klingel, Janis Krieger, Lukas Mueller, Lars Franke, Jan Kappa, Ralf Stemler

Author Affiliations +

Proceedings Volume PC12683, Terahertz Emitters, Receivers, and Applications XIV; PC1268306 (2023) https://doi.org/10.1117/12.2681878
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

We use particle swarm algorithms to devise subwavelength waveguide array structures that serve, for example, as transmissive walls (transmittance > 88%) for microwaves with incidence angles between -80 and +80 deg or spatial filters that refract microwaves with incidence angles smaller than +/-20 deg at a refraction angle of 0 deg in the forward direction. Furthermore, we optimized radar cross section reducing (RCSR) metasurfaces by use of stimulated annealing and applied machine learning to implement an RIS, whose backward deflection angle of a normally incident wave is electrically tuned between 5 deg and 65 deg for microwaves at 31 GHz.

Conference Presentation

Citation Download Citation

Marco Rahm, Alexander Wolff, Dominic Palm, Steffen Klingel, Janis Krieger, Lukas Mueller, Lars Franke, Jan Kappa, and Ralf Stemler "Subwavelength waveguide arrays and metasurfaces for spatial phase manipulation of electromagnetic waves", Proc. SPIE PC12683, Terahertz Emitters, Receivers, and Applications XIV, PC1268306 (6 October 2023); https://doi.org/10.1117/12.2681878

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