Rare Earths-Doped Materials (3rd Edition)

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Inorganic Crystalline Materials".

Deadline for manuscript submissions: 10 September 2024 | Viewed by 1841

Special Issue Editors


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Guest Editor
Faculty of Chemistry and Pharmacy, Sofia University, Sofia, Bulgaria
Interests: inorganic chemistry; material science; chemistry of rare earths; photocatalysis; environmental problems
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Inorganic Chemistry, Faculty of Chemistry and Pharmacy, University of Sofia “St. Kliment Ohridsky”, Sofia, Bulgaria
Interests: solid-state chemistry; material characterization; crystallography; heterogeneous catalysis and photocatalysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The articles included in the first and second volume of the Special Issue, “Rare Earths-Doped Materials”, published in Crystals 2020, 10; Crystals 2021, 11; and Crystals 2022, 12, Crystals 2023, 13, as well as our personal experience, make it clear that the interest and research on the subject is continuing intensively. Therefore, with this letter, we announce the third volume of Rare Earths-Doped Materials and invite you to participate. The focus of the Issue is on the research and investigation of RE-doped materials: the methods for their synthesis and characterization, as well as the development of new properties (optical, magnetic, photocatalytic, biological, etc.). Topics of interest for the Special Issue include: (i) the development and application of different methods to obtain RE-doped materials; (ii) the application of different techniques for material characterization; (iii) RE-doped materials with specific structural and optical properties.

We encourage the submission of high-quality manuscripts in the form of research articles, short communications, and reviews for contribution to the third release of this Special Issue.

Prof. Dr. Maria Milanova
Dr. Martin Tsvetkov
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. Crystals 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 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

  • rare earth elements
  • single crystals
  • bulk crystals
  • nanocrystals
  • phosphors
  • composite materials
  • semiconductors
  • insulators

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Published Papers (2 papers)

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Research

10 pages, 3494 KiB  
Article
The Growth and Spectroscopic Properties of Er, Nd: YSGG Single Crystal Fibers
by Baiyi Wu, Tao Wang, Meng Wang, Jian Zhang, Ning Jia, Zhitai Jia and Zefeng Wang
Crystals 2023, 13(12), 1646; https://doi.org/10.3390/cryst13121646 - 29 Nov 2023
Viewed by 692
Abstract
Single crystal fiber (SCF) is a novel solid gain medium and technique which combines the advantages of glass fiber and single crystal, showing great potential in the field of high-power lasers. In this paper, Er, Nd: YSGG single crystals with diameters of 2 [...] Read more.
Single crystal fiber (SCF) is a novel solid gain medium and technique which combines the advantages of glass fiber and single crystal, showing great potential in the field of high-power lasers. In this paper, Er, Nd: YSGG single crystals with diameters of 2 mm and lengths of 80 mm were successfully grown using the micro-pulling-down method for the first time. Then, the measurements of Laue spots and Er3+ distribution indicated that the as-grown crystals were of a high quality. The effect of co-doped Nd3+ on the Er: YSGG was systematically discussed, which demonstrated that Nd3+ can decrease the fluorescence lifetime of Er: 4I13/2 that solve the self-termination bottleneck accordingly. These results demonstrate that Er, Nd: YSGG SCFs are promising materials for the further 3 μm laser generations. Full article
(This article belongs to the Special Issue Rare Earths-Doped Materials (3rd Edition))
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18 pages, 5329 KiB  
Article
Growth, Structure, Spectroscopy, and Laser Operation of a “Mixed” Yb:(Y,Lu)3Al5O12 Garnet Crystal
by Sami Slimi, Pavel Loiko, Mingyan Pan, Pauline Lehoux, Venkatesan Jambunathan, Martin Smrz, Tomas Mocek, Yicheng Wang, Weidong Chen, Valentin Petrov, Rosa Maria Solé, Magdalena Aguiló, Francesc Díaz, Patrice Camy and Xavier Mateos
Crystals 2023, 13(11), 1588; https://doi.org/10.3390/cryst13111588 - 15 Nov 2023
Cited by 1 | Viewed by 872
Abstract
A single crystal of ytterbium-doped “mixed” yttrium–lutetium aluminum garnet with a stoichiometric composition of (Y0.601Lu0.233Yb0.166)3Al5O12 was grown by the Czochralski method and its structure, vibronic, spectroscopic, and laser properties were studied. The [...] Read more.
A single crystal of ytterbium-doped “mixed” yttrium–lutetium aluminum garnet with a stoichiometric composition of (Y0.601Lu0.233Yb0.166)3Al5O12 was grown by the Czochralski method and its structure, vibronic, spectroscopic, and laser properties were studied. The stimulated-emission cross-section for Yb3+ ions was maximized to 2.53 × 10−20 cm2 at 1031 nm. The emission bandwidth was ~8 nm, and the reabsorption-free luminescence lifetime of the 2F5/2 state was 1.063 ms. Pumped at 941 nm, the Yb laser generated a maximum output power of 1.04 W at 1.03 and 1.05 μm with a high slope efficiency of 76.4% and a laser threshold of 76 mW. A continuous wavelength tuning over a range of 51.6 nm (1026.4–1078.0 nm) was also achieved. Power scaling was achieved using a 969 nm diode-pumped microchip cavity. A maximum output power of ~9 W was obtained at 1.05 μm with a slope efficiency of 76% and an almost circular laser beam profile. Full article
(This article belongs to the Special Issue Rare Earths-Doped Materials (3rd Edition))
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