State-of-the-Art in Optical Materials

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optoelectronics and Optical Materials".

Deadline for manuscript submissions: 10 June 2025 | Viewed by 2407

Special Issue Editors


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Guest Editor
Optical Nanomaterial Group, Institute for Quantum Electronics, Department of Physics, ETH Zurich, 8093 Zurich, Switzerland
Interests: integrated photonics; nonlinear optics; quantum photonics; single photons; quantum information; two-dimensional materials

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Guest Editor
Soft Matter Physics Group, Adolphe Merkle Institute and National Center of Competence in Research Bio-Inspired Materials, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
Interests: nonlinear optics; biophotonics; second-order materials; soft-nanoimprint lithography; lipidic lyotropic liquid crystals; structural color; 3D nonlinear photonic crystals; photonic crystals

Special Issue Information

Dear Colleagues,

Advances in optical materials have enabled significant progress in both academia and industry, leading to the development of novel technologies with applications in information processing, data storage, sensing and communications. This wide research topic includes the realization of novel materials, new fabrication techniques, and the integration of multiple on-chip functionalities. Some of the most desired optical properties include light emission, such as diodes or single-photon sources, optical manipulation, either in waveguiding structures or in free space, and efficient photo-detection. An increasingly desired material property is biodegradability, required to meet the urgent need for multi-functional and sustainable photonic devices.

Research at the forefront of optical technology has led to the development of new material configurations that can be fabricated into circuits and structures, including planar nanophotonics and three-dimensional structures. Optical nonlinearities are of particular interest for generating light, particularly at otherwise difficult to reach wavelengths, and in non-centrosymmetric crystals, where the refractive index can be electro-optically reconfigured for programmable control.

This Special Issue aims to present the state-of-the-art research in optical materials, from novel materials and fabrication techniques, to functional and multi-component optical devices, with applications ranging from light generation and detection, to sensing, storage and control. The topics include, but are not limited to, the following:

  • Nonlinear materials
  • Two-dimensional materials
  • Photonic crystals
  • Metamaterials/metasurfaces
  • Phase-change materials
  • Novel fabrication techniques
  • Biodegradable materials for photonics

Dr. Robert Chapman
Dr. Viola V. Vogler-Neuling
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • optical materials
  • crystals
  • nonlinear optics
  • nanofabrication
  • lithography
  • photonic crystals
  • photonics

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Published Papers (2 papers)

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Research

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15 pages, 9919 KiB  
Article
Period-Doubling Route to Chaos in Photorefractive Two-Wave Mixing
by Subin Saju, Kenji Kinashi, Naoto Tsutsumi, Wataru Sakai and Boaz Jessie Jackin
Photonics 2024, 11(6), 521; https://doi.org/10.3390/photonics11060521 - 29 May 2024
Viewed by 921
Abstract
This paper investigates the possibilities of complex nonlinear dynamic signal generation using a simple photorefractive two-wave mixing system without any feedback using numerical simulations. The novel idea is to apply a sinusoidal electric field to the system inroder to extract nonlinear dynamic behavior. [...] Read more.
This paper investigates the possibilities of complex nonlinear dynamic signal generation using a simple photorefractive two-wave mixing system without any feedback using numerical simulations. The novel idea is to apply a sinusoidal electric field to the system inroder to extract nonlinear dynamic behavior. The mathematical model of the system was constructed using Kogelnick’s coupled wave equations and Kukhtarev’s material equation. The spatio-temporal evolution of the system was simulated in discrete steps numerically. The temporal evolution of the output light intensity exhibits period doubling, behavior which is a characteristic feature of complex nonlinear dynamic systems. A bifurcation diagram and Lyapunov exponentials confirm the presence of the period-doubling route to chaos in the system. The observed complex signal pattern varies uniformly with respect to the amplitude of the applied field, indicating a controllable nonlinear dynamic behavior. Such a system can be very useful in applications such as photonic reservoir computing, in-materio computing, photonic neuromorphic networks, complex signal detection, and time series prediction. Full article
(This article belongs to the Special Issue State-of-the-Art in Optical Materials)
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Review

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19 pages, 12347 KiB  
Review
Magneto–Optical Properties and Applications of Magnetic Garnet
by Yuichi Nakamura, Sumiko Bharti Singh Chauhan and Pang Boey Lim
Photonics 2024, 11(10), 931; https://doi.org/10.3390/photonics11100931 - 1 Oct 2024
Viewed by 720
Abstract
The interaction between light and the magnetization of a material is called the magneto–optical effect. It was used in magneto–optical recording such as MO disks and has been applied to optical isolators etc. with the development of optical communications. The magneto–optical properties of [...] Read more.
The interaction between light and the magnetization of a material is called the magneto–optical effect. It was used in magneto–optical recording such as MO disks and has been applied to optical isolators etc. with the development of optical communications. The magneto–optical properties of magnetic garnets and their applications are briefly reviewed in this article. In the first half, after a brief overview of the phenomenology of the magneto–optical effect, the effects of element substitution on properties such as Faraday rotation and optical absorbance of magnetic garnets are shown. In the second half, some interesting applications such as imaging technologies and other novel applications using the magneto–optical effect of magnetic garnets are also introduced. Full article
(This article belongs to the Special Issue State-of-the-Art in Optical Materials)
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