Advancements in Optical Metamaterials

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optical Interaction Science".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 2870

Special Issue Editor


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Guest Editor
Nanophotonics and Optoelectronics Laboratory, The Pennsylvania State University, State College, PA, USA
Interests: dielectric nanophotonics; metasurfaces; multipole decomposition; BICs; structured light

Special Issue Information

Dear Colleagues,

This Special Issue of Photonics explores the cutting edge of optical metamaterials—artificial structures employed to manipulate light in peculiar ways. During the past few decades, this area has attracted significant attention; researchers used metal, dielectric, and hybrid structures to create optical effects on demand. Optical metamaterials and metasurfaces are proposed for creating miniaturized, multifunctional devices for advanced imaging, processing, and focusing applications.

With this issue, we aim to showcase the latest advancements in optical metamaterials, highlighting their transformative potential. We strive to explore both fundamental research and practical applications; the topics of interest include but are not limited to the following:

  • Plasmonic and dielectric metasurfaces;
  • Volumetric metamaterials;
  • Novel optical phenomena;
  • Advanced fabrication techniques;
  • Light–matter interaction;
  • Metadevices for biophotonics;
  • Integrated metaoptics.

Dr. Pavel Terekhov
Guest Editor

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Keywords

  • optical metamaterials
  • optical metasurfaces
  • plasmonic and dielectric metasurfaces

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Published Papers (2 papers)

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Research

24 pages, 2793 KiB  
Article
Dispersive Sweatt Model for Broadband Lens Design with Metasurfaces
by Weiyu Chen, Ko-Han Shih and C. Kyle Renshaw
Photonics 2025, 12(1), 43; https://doi.org/10.3390/photonics12010043 - 6 Jan 2025
Viewed by 609
Abstract
The Sweatt model has been extensively used to design optical systems containing diffractive optical elements (DOEs) because it captures the dispersive characteristics of DOEs. We introduce a new dispersive Sweatt model (DSM) that can describe meta-atom (MA) dispersion, which has material and geometric [...] Read more.
The Sweatt model has been extensively used to design optical systems containing diffractive optical elements (DOEs) because it captures the dispersive characteristics of DOEs. We introduce a new dispersive Sweatt model (DSM) that can describe meta-atom (MA) dispersion, which has material and geometric contributions in addition to diffraction. It uses a wavelength-dependent scalar coefficient to modify the diffractive dispersion and describe the dispersion of a given MA basis. This provides a robust framework to design systems containing metasurface (MS) elements while including their unique dispersive properties in the design optimization. Importantly, the DSM is based on ray optics and enables the design of MS-containing systems using conventional optical design software such as Zemax and Code V. We use the DSM to demonstrate the design of a hybrid refractive/MS achromatic doublet for the midwave infrared (MWIR) band. The design example includes multiple wavelengths and field angles during optimization and demonstrates excellent agreement between the DSM and real hybrid lens performance modeled using wave optics. We discuss the limits of the DSM and present a simple model to predict performance limits due to phase mismatch at Fresnel zone boundaries. Full article
(This article belongs to the Special Issue Advancements in Optical Metamaterials)
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9 pages, 4244 KiB  
Article
Carbon Dot-Decorated Polystyrene Microspheres for Whispering-Gallery Mode Biosensing
by Anton A. Starovoytov, Evgeniia O. Soloveva, Kamilla Kurassova, Kirill V. Bogdanov, Irina A. Arefina, Natalia N. Shevchenko, Tigran A. Vartanyan, Daler R. Dadadzhanov and Nikita A. Toropov
Photonics 2024, 11(5), 480; https://doi.org/10.3390/photonics11050480 - 20 May 2024
Cited by 3 | Viewed by 1698
Abstract
Whispering gallery mode (WGM) resonators doped with fluorescent materials find impressive applications in biological sensing. They do not require special conditions for the excitation of WGM inside that provide the basis for in vivo sensing. Currently, the problem of materials for in vivo [...] Read more.
Whispering gallery mode (WGM) resonators doped with fluorescent materials find impressive applications in biological sensing. They do not require special conditions for the excitation of WGM inside that provide the basis for in vivo sensing. Currently, the problem of materials for in vivo WGM sensors are substantial since their fluorescence should have stable optical properties as well as they should be biocompatible. To address this we present WGM microresonators of 5–7 μm, where the dopant is made of carbon quantum dots (CDs). CDs are biocompatible since they are produced from carbon and demonstrate bright optical emission, which shows different bands depending on the excitation wavelength. The WGM sensors developed here were tested as label-free biosensors by detecting bovine serum albumin molecules. The results showed WGM frequency shifting, with the limit of detection down to 1016 M level. Full article
(This article belongs to the Special Issue Advancements in Optical Metamaterials)
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