Toward Perfect Optical Diffusers: Dielectric Huygens’ Metasurfaces with Critical Positional Disorder

Arslan D, Rahimzadegan A, Fasold S, Falkner M, Zhou W, Kroychuk M, Rockstuhl C, Pertsch T, Staude I (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Advanced Materials Wiley

Book Volume: 34

Article Number: 2105868

Journal Issue: 5

DOI: 10.1002/adma.202105868

Abstract

Conventional optical diffusers, such as thick volume scatterers (Rayleigh scattering) or microstructured surface scatterers (geometric scattering), lack the potential for on-chip integration and are thus incompatible with next-generation photonic devices. Dielectric Huygens’ metasurfaces, on the other hand, consist of 2D arrangements of resonant dielectric nanoparticles and therefore constitute a promising material platform for ultrathin and highly efficient photonic devices. When the nanoparticles are arranged in a random but statistically specific fashion, diffusers with exceptional properties are expected to come within reach. This work explores how dielectric Huygens’ metasurfaces can implement wavelength-selective diffusers with negligible absorption losses and nearly Lambertian scattering profiles that are largely independent of the angle and polarization of incident waves. The combination of tailored positional disorder with a carefully balanced electric and magnetic response of the nanoparticles is shown to be an integral requirement for the operation as a diffuser. The proposed metasurfaces’ directional scattering performance is characterized both experimentally and numerically, and their usability in wavefront-shaping applications is highlighted. Since the metasurfaces operate on the principles of Mie scattering and are embedded in a glassy environment, they may easily be incorporated in integrated photonic devices, fiber optics, or mechanically robust augmented reality displays.

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE) Karlsruhe Institute of Technology (KIT) DE Germany (DE) Lomonosov Moscow State University / Московский государственный университет имени М.В.Ломоносова RU Russian Federation (RU)

How to cite

APA:

Arslan, D., Rahimzadegan, A., Fasold, S., Falkner, M., Zhou, W., Kroychuk, M.,... Staude, I. (2022). Toward Perfect Optical Diffusers: Dielectric Huygens’ Metasurfaces with Critical Positional Disorder. Advanced Materials, 34(5). https://doi.org/10.1002/adma.202105868

MLA:

Arslan, Dennis, et al. "Toward Perfect Optical Diffusers: Dielectric Huygens’ Metasurfaces with Critical Positional Disorder." Advanced Materials 34.5 (2022).

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