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Advanced Composite and Laser-Processed Glasses for Optoelectronic and Photonic Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Optical and Photonic Materials".

Deadline for manuscript submissions: closed (20 October 2023) | Viewed by 3192

Special Issue Editor

Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology-Hellas (FORTH), Heraklion-Crete, Greece
Interests: laser-assisted synthesis and characterization of composite glasses and perovskites for advanced photonic and photovoltaic applications; nonlinear optical properties of oxide glasses and crystals; growth of glassy and crystalline materials inside photonic crystal fibers (PCFs), toward sensing, switching, optofluidic, and photonic bandgap applications

Special Issue Information

Dear Colleagues,

Over the recent years, the incorporation of perovskite nanocrystals, two-dimensional materials, and metal nanoparticles within inorganic oxide glasses has been a promising way toward producing composite glasses with advanced optical features. At the same time, the encapsulation approach readily resolves stability issues upon exposure to ambient environments, as well as potential toxicity issues. These advantages render composite glasses suitable candidates for various types of optoelectronic and photonic applications that include light-emitting diodes, photodetectors, waveguides, lasers, backlight displays, optical memory components, and optical fibers.

In addition, laser processing is an outstanding tool for the formation of periodic micro- and nanopatterns on the glass surface and within the hosting glass according to the employed irradiation configuration. The formation of laser-induced periodic structures represents an additional tool for tailoring and further tuning the optical properties of the composite glasses, upon generating interesting light and plasmon coupling effects between the glass matrix and the incorporated material.

This Special Issue on “Advanced Composite and Laser-Processed Glasses for Optoelectronic and Photonic Applications” aims to gather recent findings on the development of advanced composite glasses upon incorporating functional materials such as perovskites, two-dimensional materials, and metal particles within the hosting glass matrix, and/or by employing laser processing to further advance the photonic properties of the designed glass architectures.

Based on the above, it is my great pleasure to invite you to submit a manuscript for this SI. Please note that all types of manuscripts, i.e., full papers, communications, and reviews, are welcome.

Dr. Ioannis Konidakis
Guest Editor

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. Materials is an international peer-reviewed open access semimonthly 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 2600 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

  • composite glasses
  • metal nanoparticles
  • perovskite nanocrystals
  • two-dimensional materials
  • optical fibers
  • photoluminescence
  • laser processing

Published Papers (2 papers)

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Research

9 pages, 3652 KiB  
Article
Synthesis, Linear and Nonlinear Optical Properties of Ag/Al2O3 Nanocomposites
by Sharafudeen Kaniyarakkal, Tiny Thomas, Saravana Kumar Sadagopalan, Lekshmi Jayamohan, Remya Muralimanohar, Lekshmi Vasanthakumaryamma and Vijayakumar Sadasivan Nair
Materials 2022, 15(18), 6322; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15186322 - 12 Sep 2022
Cited by 5 | Viewed by 1086
Abstract
This work reports a detailed study of the synthesis, characterization and third-order nonlinear optical properties of Ag and Al2O3 nanoparticles and their polymer nanocomposites. Ag and Al2O3 nanoparticles were prepared by the chemical precipitation method. The X-ray [...] Read more.
This work reports a detailed study of the synthesis, characterization and third-order nonlinear optical properties of Ag and Al2O3 nanoparticles and their polymer nanocomposites. Ag and Al2O3 nanoparticles were prepared by the chemical precipitation method. The X-ray diffraction studies confirmed the purity and the crystalline nature of the sample and revealed the crystallite size. The linear optical properties and the structural morphology of the nanoparticles were confirmed using UV–visible spectroscopy and SEM analysis. The prepared nanoparticles were introduced into the polymer matrix by the spin-coating technique. Open-aperture and closed-aperture Z-scan technique was used to study the nonlinear absorption and nonlinear refraction of the samples under a Q-switched Nd:YAG laser at 532 nm. The observed third-order nonlinear optical susceptibility (χ(3)) was on the order of 10−6 esu, which indicates that these materials are potential candidates for photonic applications. Full article
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11 pages, 3653 KiB  
Article
Laser-Induced Erasable and Re-Writable Waveguides within Silver Phosphate Glasses
by Konstantinos Tsimvrakidis, Ioannis Konidakis and Emmanuel Stratakis
Materials 2022, 15(9), 2983; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15092983 - 20 Apr 2022
Cited by 1 | Viewed by 1427
Abstract
Femtosecond direct laser writing is a well-established and robust technique for the fabrication of photonic structures. Herein, we report on the fabrication of buried waveguides in AgPO3 silver metaphosphate glasses, as well as, on the erase and re-writing of those structures, by [...] Read more.
Femtosecond direct laser writing is a well-established and robust technique for the fabrication of photonic structures. Herein, we report on the fabrication of buried waveguides in AgPO3 silver metaphosphate glasses, as well as, on the erase and re-writing of those structures, by means of a single femtosecond laser source. Based on the fabrication procedure, the developed waveguides can be erased and readily re-inscribed upon further femtosecond irradiation under controlled conditions. Namely, for the initial waveguide writing the employed laser irradiation power was 2 J/cm2 with a scanning speed of 5 mm/s and a repetition rate of 200 kHz. Upon enhancing the power to 16 J/cm2 while keeping constant the scanning speed and reducing the repetition rate to 25 kHz, the so formed patterns were readily erased. Then, upon using a laser power of 2 J/cm2 with a scanning speed of 1 mm/s and a repetition rate of 200 kHz the waveguide patterns were re-written inside the glass. Scanning electron microscopy (SEM) images at the cross-section of the processed glasses, combined with spatial Raman analysis revealed that the developed write/erase/re-write cycle, does not cause any structural modification to the phosphate network, rendering the fabrication process feasible for reversible optoelectronic applications. Namely, it is proposed that this non-ablative phenomenon lies on the local relaxation of the glass network caused by the heat deposited upon pulsed laser irradiation. The resulted waveguide patterns Our findings pave the way towards new photonic applications involving infinite cycles of write/erase/re-write processes without the need of intermediate steps of typical thermal annealing treatments. Full article
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