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Luminescent Properties of Materials and Their 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 September 2023) | Viewed by 3100

Special Issue Editor


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Guest Editor
Department of Photonics, Electronics and Lighting Technology, Faculty of Electrical Engineering, Bialystok University of Technology, Bialystok, Poland
Interests: luminescent materials; optical fiber technology; optoelectronic sensors; functional glasses and polymers; fluorescent resonant energy transfer; optical fibers
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Special Issue Information

Dear Colleagues,

In the last decade, there has been great progress in the new technologies of synthesis of pure and multiphase materials, doping methods, and structurization of metamaterials significantly extending the applications of luminescent materials. 

The luminescence of materials and structures can be successively used for development in the field of new photonic devices: optical fibers and waveguides, sensors, light sources (wideband and lasers), information storage and management, and medicine. Their optical, chemical, and bioactivity results from the possibility of their modification with functional compounds (organic compounds, lanthanides, nanocrystals) or nanostructurization (photonic bandgap effect, thin films). The organic dyes exhibit high fluorescence quantum yield, wide absorption, and emission bands, overlapping absorption and emission spectra, and short fluorescence decay time. Moreover, the characteristic multiband emission spectrum of the aromatic hydrocarbons results from their specific compounds structures. Lanthanides, thanks to a well-defined luminescence spectrum, significant Stokes shift, and long luminescence decay time, are commonly used for optical fiber radiation sources and lasers. Lanthanide doped nanocrystals offer high efficiency and narrow emission bands due to their local environment effect. The availability of various methods for introducing dopants in the host materials—glasses, crystals, ceramics, glass ceramics, polymers, and nanocomposites—offers significant progress in their applications.

In this Special Issue, novel luminescent materials and their applications are highlighted and discussed. It is my pleasure to invite you to submit a manuscript for this Special Issue of Materials entitled “Luminescent Properties of Materials and Their Applications”.

Dr. Piotr Miluski
Guest Editor

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Keywords

  • synthesis and characterization of luminescent materials
  • photoactive optical structures
  • applications of luminescent materials (e.g., optical fibers, sensors, spectrum converters)
  • new technologies for the fabrication of luminescent materials
  • luminescent functional materials

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Published Papers (2 papers)

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Research

12 pages, 7067 KiB  
Article
Broadband Profiled Eye-Safe Emission of LMA Silica Fiber Doped with Tm3+/Ho3+ Ions
by Piotr Miluski, Krzysztof Markowski, Marcin Kochanowicz, Marek Łodziński, Wojciech A. Pisarski, Joanna Pisarska, Marta Kuwik, Magdalena Leśniak, Dominik Dorosz, Jacek Żmojda, Tomasz Ragiń and Jan Dorosz
Materials 2023, 16(24), 7679; https://doi.org/10.3390/ma16247679 - 17 Dec 2023
Viewed by 1050
Abstract
LMA (Large Mode Area) optical fibers are presently under active investigation to explore their potential for generating laser action or broadband emission directly within the optical fiber structure. Additionally, a wide mode profile significantly reduces the power distribution density in the fiber cross-section, [...] Read more.
LMA (Large Mode Area) optical fibers are presently under active investigation to explore their potential for generating laser action or broadband emission directly within the optical fiber structure. Additionally, a wide mode profile significantly reduces the power distribution density in the fiber cross-section, minimizing the power density, photodegradation, or thermal damage. Multi-stage deposition in the MCVD-CDT system was used to obtain the structural doping profile of the LMA fiber multi-ring core doped with Tm3+ and Tm3+/Ho3+ layer profiles. The low alumina content (Al2O3: 0.03wt%) results in low refractive index modification. The maximum concentrations of the lanthanide oxides were Tm2O3: 0.18wt % and Ho2O3: 0.15wt%. The double-clad construction of optical fiber with emission spectra in the eye-safe spectral range of (1.55–2.10 µm). The calculated LP01 Mode Field Diameter (MFD) was 69.7 µm (@ 2000 nm, and 1/e of maximum intensity), which confirms LMA fundamental mode guiding conditions. The FWHM and λmax vs. fiber length are presented and analyzed as a luminescence profile modification. The proposed structured optical fiber with a ring core can be used in new broadband optical radiation source designs. Full article
(This article belongs to the Special Issue Luminescent Properties of Materials and Their Applications)
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16 pages, 2511 KiB  
Article
Exploring Structure-Sensitive Factors Relevant to Cryogenic Laser Operation in Oxide Crystals Doped with Er3+ Ions
by Witold Ryba-Romanowski, Radoslaw Lisiecki, Jaroslaw Komar, Boguslaw Macalik and Marek Berkowski
Materials 2023, 16(5), 2095; https://doi.org/10.3390/ma16052095 - 3 Mar 2023
Cited by 2 | Viewed by 1462
Abstract
Crystals of Gd3Al2.5Ga2.5O12:Er3+, (Lu0.3Gd0.7)2SiO5:Er3+ and LiNbO3:Er3+ compounds differing in origin and the nature of their inherent structural disorder were crystalized. Optical [...] Read more.
Crystals of Gd3Al2.5Ga2.5O12:Er3+, (Lu0.3Gd0.7)2SiO5:Er3+ and LiNbO3:Er3+ compounds differing in origin and the nature of their inherent structural disorder were crystalized. Optical absorption and luminescence spectra for transitions between the 4I15/2 and the 4I13/2 multiplets of Er3+ ions for the crystal samples were recorded versus temperatures in the region of 80–300 K. Gathered data were analyzed thoroughly providing the in-depth knowledge of the effects of temperature on intensities, wavelengths and bandwidths of Er3+ transitions. The information acquired together with the knowledge of significant structural dissimilarities of the host crystals chosen made it possible to propose an interpretation of the impact of a structural disorder in Er3+-doped crystals on their spectroscopic properties, and to determine their lasing ability at cryogenic temperatures upon resonant (in-band) optical pumping. Full article
(This article belongs to the Special Issue Luminescent Properties of Materials and Their Applications)
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