Structural, luminescent and upconversion characteristics of Er3+ doped titanium zinc tellurite glass

2021 ◽  
Vol 120 ◽  
pp. 111413
Author(s):  
M.E. Alvarez-Ramos ◽  
F. Félix-Domínguez ◽  
G. Saavedra-Rodríguez ◽  
R.C. Carrillo-Torres
2021 ◽  
Vol 11 (12) ◽  
pp. 5440
Author(s):  
Elena A. Anashkina ◽  
Vitaly V. Dorofeev ◽  
Alexey V. Andrianov

Microresonator-based lasers in the two-micron range are interesting for extensive applications. Tm3+ ions provide high gain; therefore, they are promising for laser generation in the two-micron range in various matrices. We developed a simple theoretical model to describe Tm-doped glass microlasers generating in the 1.9–2 μm range with in-band pump at 1.55 μm. Using this model, we calculated threshold pump powers, laser generation wavelengths and slope efficiencies for different parameters of Tm-doped tellurite glass microspheres such as diameters, Q-factors, and thulium ion concentration. In addition, we produced a 320-μm tellurite glass microsphere doped with thulium ions with a concentration of 5·1019 cm−3. We attained lasing at 1.9 μm experimentally in the produced sample with a Q-factor of 106 pumped by a C-band narrow line laser.


Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 513
Author(s):  
Anna Rabajczyk ◽  
Maria Zielecka ◽  
Krzysztof Cygańczuk ◽  
Łukasz Pastuszka ◽  
Leszek Jurecki

A recent trend in the field of membrane research is the incorporation of nanoparticles into polymeric membranes, which could produce synergistic effects when using different types of materials. This paper discusses the effect of the introduction of different nanometals such as silver, iron, silica, aluminum, titanium, zinc, and copper and their oxides on the permeability, selectivity, hydrophilicity, conductivity, mechanical strength, thermal stability, and antiviral and antibacterial properties of polymeric membranes. The effects of nanoparticle physicochemical properties, type, size, and concentration on a membrane’s intrinsic properties such as pore morphology, porosity, pore size, hydrophilicity/hydrophobicity, membrane surface charge, and roughness are discussed, and the performance of nanocomposite membranes in terms of flux permeation, contaminant rejection, and antifouling capability are reviewed. The wide range of nanocomposite membrane applications including desalination and removal of various contaminants in water-treatment processes are discussed.


2021 ◽  
Vol 236 ◽  
pp. 118078
Author(s):  
Yu Zhang ◽  
Lizhang Xia ◽  
Xinjie Shen ◽  
Jun Li ◽  
Gaobo Yang ◽  
...  

2021 ◽  
Vol 117 ◽  
pp. 111140
Author(s):  
Jaweher Maoui ◽  
Jihene Lataoui ◽  
Haythem Gammoudi ◽  
Ridha Mghaieth ◽  
Nejeh Jaba

2007 ◽  
Vol 353 (4) ◽  
pp. 339-343 ◽  
Author(s):  
V.A.G. Rivera ◽  
E. Rodriguez ◽  
E.F. Chillcce ◽  
C.L. Cesar ◽  
L.C. Barbosa
Keyword(s):  

2022 ◽  
Vol 165 ◽  
pp. 108683
Author(s):  
Hyun Woo Kang ◽  
Jung-Hoon Choi ◽  
Ki Rak Lee ◽  
Hwan-Seo Park

2008 ◽  
Author(s):  
Yusuke Arai ◽  
Guanshi Qin ◽  
Takenobu Suzuki ◽  
Yasutake Ohishi ◽  
Tetsuji Yano ◽  
...  
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document