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Photoluminiscence in amorphous chalcogenides doped with lanthanide ions

Authors: Prokop Vít | Wágner Tomáš | Střižík Lukáš | Beneš Ludvík | Oswald Jiří | Frumarová Božena | Vlček Milan | Svoboda Roman

Year: 2016

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	Photoluminiscence in amorphous chalcogenides doped with lanthanide ions	The (Ge25Ga8As2S65)1–xErx, where x = 0.01–1 at%, and (Ge25Ga8M2S65)0.999Er0.001, where M is As, Sb or Bi, chalcogenide glasses were investigated for their applicability for photon upconversion photoluminescence (UCPL) emission from visible to mid-infrared spectral region and for optical amplification. Increase of the Er3+ concentration in thermally stable (Ge25Ga8As2S65)1–xErx glasses leads to increasing red-to-green UCPL emission intensity ratio, while the total UCPL emission intensity increases as well. On the other hand, the Ge25Ga8Bi2S65: Er3+ show promising optical gain coefficient value at relatively low pumping powers making these materials attractive for C-band (λ ≈ 1.5 μm) optical amplification. Intensities of the intra-4f electronic transitions of Er3+ ions embedded in a host matrix were investigated on the basis of Judd-Ofelt theory. The structure of glasses was studied by Raman spectroscopy. Results of this work demonstrate the auspicious using of these materials in variety of application such as in photonics and optoelectronics.	upconversion photoluminescence; chalcogenide; Er3+-doped glass