Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
2.3
2.4
Journals
Photonics
Special Issues
New Insights into Optical Materials
share announcement

New Insights into 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: closed (31 March 2024) | Viewed by 2550

Special Issue Editors

Dr. Cristian Felipe Ramírez Gutiérrez

E-Mail Website
Guest Editor
Information Technologies and Applied Communication Research Group, Polytechnic University of Querétaro, Querétaro 76240, México
Interests: photonic crystals; porous materials; genetic algorithms; photoacoustic; acousto-optics; materials characterization; coatings; condensed matter physics
Dr. Jorge David Castaño-Yepes

E-Mail Website
Guest Editor
Institute of Physics, Pontifical Catholic University of Chile, Avenida Vicuna Mackenna, Santiago 4860, Chile
Interests: quantum field theory; topological materials; statistical mechanics; condensed matter physics; quantum chromodynamics

Special Issue Information

Dear Colleagues,

Optical materials are essential for controlling and manipulating electromagnetic radiation in various spectral regions, including the ultraviolet, visible, and infrared regions. This field has a rich history dating back to vision theory, geometric optics, and the development of optical devices, such as lenses and mirrors. Since then, optical materials have evolved in tandem with significant advancements in physics, resulting in novel materials and devices, including impurity-doped dielectric crystals, ceramics, semiconductors, glasses, polymers, rare-earth-doped materials, and nano-based composites. These materials have practical applications in fields such as biomedical devices, optical communication networks, imaging, photovoltaics, and optical storage media. This Special Issue aims to provide new insights into optical materials and their properties. It will cover a wide range of topics, including the development of new materials, the use of advanced optical materials in various applications, photonic crystal structure analysis, theoretical and computational modeling of optical materials, and the most recent advances in the field of nonlinear optical materials.

The objectives of this Special Issue are to report on new discoveries in optical materials. Topics of interest include, but are not limited to, the following:

  • Optical materials for quantum technologies;
  • Nanoparticles in optical materials;
  • Nonlinear optics;
  • Plasmonics;
  • Metamaterials;
  • Biophotonics;
  • Optical coatings;
  • Organic optoelectronics;
  • Low-dimensional materials.

Dr. Cristian Felipe Ramírez Gutiérrez
Dr. Jorge David Castaño-Yepes
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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.

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

18 pages, 4768 KiB  
Article
Investigation of a Pyramid-like Optical Absorber with High Absorptivity in the Range of Ultraviolet A to Middle Infrared
by Qinyin Chen, Jo-Ling Huang, Chih-Hsuan Wang, Pei-Xiu Ke, Cheng-Fu Yang and Hsien-Wei Tseng
Photonics 2024, 11(4), 352; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics11040352 - 10 Apr 2024
Viewed by 334
Abstract
In this study, a simple pyramid-like ultra-wideband absorber was designed to explore high absorptivity across a wide bandwidth. The absorber consisted of eight layers organized into four groups, and each group comprised a metal layer followed by an oxide layer, both of which [...] Read more.
In this study, a simple pyramid-like ultra-wideband absorber was designed to explore high absorptivity across a wide bandwidth. The absorber consisted of eight layers organized into four groups, and each group comprised a metal layer followed by an oxide layer, both of which were square with equal side lengths. Specifically, the chosen oxides, arranged from bottom to top, included SiO2 (t7 layer), Al2O3 (t5 layer), SiO2 (t3 layer), and Al2O3 (t1 layer). In the initial design phase, the thickness of the t8 Ti layer was set to 50 nm and assigned initial values to the thicknesses of the t7-t1 layers, and the widths of the four groups w4, w3, w2, and w1, decreased successively from bottom to top, creating a structure reminiscent of a pyramid. Comsol (version 6.0) was utilized to simulate and systematically vary one parameter at a time, ranging from the thicknesses of the t7-t1 layers to the widths of w4-w1, in order to identify the most suitable structural parameters. Our analyses demonstrated that multimode resonance arose due to the emergence of absorption peaks at lower wavelengths between larger and smaller areas. Additionally, surface plasmon resonance and interference effects between various layers and materials were attributed to the alternating arrangement of metal and oxide layers. The enhancements in the electric field observed at different resonance peak wavelengths illustrated the Fabry–Perot cavity effect, while the impedance matching effect was observed through variations in the real and imaginary parts of the optical impedance with respect to the wave vector. After simulating using these optimally found thicknesses and widths, the aforementioned effects manifested in the pyramid-like ultra-wideband absorber we designed, with its absorptivity surpassing 0.900 across the spectrum from ultraviolet A (335 nm) to middle infrared (4865 nm). Full article
(This article belongs to the Special Issue New Insights into Optical Materials)
►▼ Show Figures

Figure 1

13 pages, 5825 KiB  
Article
Collapse Dynamics of Vector Vortex Beams in Kerr Medium with Parity–Time-Symmetric Lattice Modulation
by Xiaoxu Zan, Gang Yao, Yan Wu, Ying Guan, Khian-Hooi Chew and Rui-Pin Chen
Photonics 2024, 11(4), 345; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics11040345 - 09 Apr 2024
Viewed by 434
Abstract
Based on the two-dimensional (2D) nonlinear Schrödinger equation, we investigate the collapse dynamics of a vector vortex optical field (VVOF) in nonlinear Kerr media with parity–time (PT)-symmetric modulation. The critical power for the collapse of a VVOF in a Kerr-ROLP medium (Kerr medium [...] Read more.
Based on the two-dimensional (2D) nonlinear Schrödinger equation, we investigate the collapse dynamics of a vector vortex optical field (VVOF) in nonlinear Kerr media with parity–time (PT)-symmetric modulation. The critical power for the collapse of a VVOF in a Kerr-ROLP medium (Kerr medium with a real optical lattice potential) is derived. Numerical simulations indicate that the number, position, propagation distance, and collapse profile of the collapse of a VVOF in sine and cosine parity–time-symmetric potential (SCPT) Kerr media are closely related to the modulation depth, initial powers, and the topological charge number of a VVOF. The VVOF collapses into symmetric shapes during propagation in a Kerr-ROLP medium, and collapse shapes are sensitively related to the density of the PT-symmetric optical lattice potential. In addition, due to gain–loss, the VVOF will be distorted during propagation in the Kerr-SCPT medium, forming an asymmetric shape of collapse. The power evolution of the VVOF in a Kerr-SCPT medium as a function of the transmission distance with different modulating parameters and topological numbers is analyzed in detail. The introduction of PT-symmetric optical lattice potentials into nonlinear Kerr materials may provide a new approach to manipulate the collapse of the VVOF. Full article
(This article belongs to the Special Issue New Insights into Optical Materials)
►▼ Show Figures

Figure 1

9 pages, 2210 KiB  
Article
Experimental Observation of Surface Wave States at the Gold–Silver Interface
by Vera N. Smolyaninova, Daryna Soloviova, David M. Schaefer, Alexander B. Kozyrev and Igor I. Smolyaninov
Photonics 2024, 11(4), 339; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics11040339 - 06 Apr 2024
Viewed by 419
Abstract
We demonstrate that a gradual interface between gold and silver supports the propagation of a novel kind of surface electromagnetic wave, which is different from the more well-known surface plasmon polaritons. The existence of such surface waves leads to a paradoxical situation in [...] Read more.
We demonstrate that a gradual interface between gold and silver supports the propagation of a novel kind of surface electromagnetic wave, which is different from the more well-known surface plasmon polaritons. The existence of such surface waves leads to a paradoxical situation in which a continuous metal barrier which does not have any pinholes may exhibit considerably increased light transmission if the barrier is made of two different metals. A spectroscopic study of this effect is reported. Full article
(This article belongs to the Special Issue New Insights into Optical Materials)
►▼ Show Figures

Figure 1

16 pages, 7666 KiB  
Article
Stability of the Photoluminescent Response on Hydroxyapatite/Multi-Walled Carbon Nanotube Composites
by Edna X. Figueroa-Rosales, Daniel Hernández-Cruz, María J. Robles-Águila, Mario E. Rodriguez-Garcia and Javier Martínez-Juárez
Photonics 2023, 10(8), 919; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics10080919 - 10 Aug 2023
Viewed by 714
Abstract
The application of hydroxyapatite (HAp)/multi-walled carbon nanotube composites in the medical area as coatings in prosthetics has been widely used because the carbon nanotubes reinforce the mechanical properties of hydroxyapatite. Despite that, their photoluminescent properties have not been studied, nor has the effect [...] Read more.
The application of hydroxyapatite (HAp)/multi-walled carbon nanotube composites in the medical area as coatings in prosthetics has been widely used because the carbon nanotubes reinforce the mechanical properties of hydroxyapatite. Despite that, their photoluminescent properties have not been studied, nor has the effect of different amounts of multi-walled carbon nanotubes on this property or what happened with their response with time. This work demonstrated that the photoluminescent response of HAp and HAp/multi-walled carbon nanotubes functionalized with oxygen groups (OMWCNT) composites was stabilized over time. The evaluated parameters were: three different amounts of OMWCNT (15, 25, and 35 mg) and two different thermal treatment temperatures (250 and 400 °C); all the samples were measured twice, after preparation and over a year after. The results indicated that over time the photoluminescent response is stabilized due to the passivation of surface defects, independently of the amount of OMWCNT used and the thermal treatment. In the end, the photoluminescent properties of these composites will extend their utilization in the medical area or open the door to new applications. Full article
(This article belongs to the Special Issue New Insights into Optical Materials)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop