Material losses in Helmholtz equation: from polarisation-loss locking to lossy transmission via passive metasurface

Sinuhé Perea-Puente; Francisco J. Rodríguez-Fortuño

doi:10.1117/12.2645078

22 May 2023 Material losses in Helmholtz equation: from polarisation-loss locking to lossy transmission via passive metasurface

Sinuhé Perea-Puente, Francisco J. Rodríguez-Fortuño

Author Affiliations +

Proceedings Volume 12327, SPIE Future Sensing Technologies 2023; 123270T (2023) https://doi.org/10.1117/12.2645078
Event: SPIE Future Sensing Technologies, 2023, Yokohama, Japan

Abstract

Yielding on the intimate link between losses and polarization of the evanescent profile in optical waveguide via complex wave-vector polarization-loss locking phenomena was discussed in the context of spin orbit interactions of light. Inspired by this, we conducted an investigation into a novel method to achieve improved transmission of light across optically opaque materials showing Helmholtz equation solution for complex values introducing a passive metasurface placed on the boundaries of the material, affecting transmission coefficients for phase and amplitude simultaneously. This approach resulted in a non-monotonic beam penetrating inside the lossy material, enhancing its intensity while reducing its amplitude near the interface. Such proposal have interesting applications in various scenarios, including acoustic isolation, sensing technologies via grid metasurface matching, improved telecommunications transmission in homogeneous materials, or enhanced laser resilience in biological tissues for subcutaneous imaging or treatment. Furthermore, our theoretical approach paves the way for potential realization in similar physical systems, ranging from near-zero-index materials to purely plasmonic interfaces, offering a comprehensive overview of the formalism.

Conference Presentation

Citation Download Citation

Sinuhé Perea-Puente and Francisco J. Rodríguez-Fortuño "Material losses in Helmholtz equation: from polarisation-loss locking to lossy transmission via passive metasurface", Proc. SPIE 12327, SPIE Future Sensing Technologies 2023, 123270T (22 May 2023); https://doi.org/10.1117/12.2645078

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