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Laser Optics & Photonics and Atomic & Plasma Science 2018
J u l y 1 6 - 1 7 , 2 0 1 8
P r a g u e , C z e c h R e p u b l i c
Page 50
American Journal of Computer Science and Information Technology
ISSN: 2349-3917
E u r o S c i C o n J o i n t E v e n t o n
Laser Optics & Photonics and
Atomic & Plasma Science
T
he glasses of the (Yb
x
Y
1-x
)
2
O
3
-Al
2
O
3
-B
2
O
3
with composition close to the
huntite stoichiometry was synthesized and their multi-aspect investigation
was carried out. It was established that the glasses are characterized by (1) low
efficiencies of cooperative luminescence of Yb-Yb pairs and photo bleaching
and photo darkening caused by charge exchange of the activator ions as well
as by high threshold of laser-induced destruction of the glass surface; (2) the
2
F
5/2
-->
2
F
7/2
luminescence band effective width and its limiting quantum yield
consist of about 33 nm and 94% respectively; (3) heat conductivity increases
from 0.6 to 0.9 W/mK with rise of Yb
2
O
3
concentration from 0.5 to 10 mol. %
and may grow up to 1.3W/mK at additional doping with Sb; (4) the nonlinear
index of refraction close to 2.2×10
–13
esu. These glasses lasing parameters
at the both free-running mode and Q-switched operation were studied and
obtained results were compared with the similar parameters of known glasses
activated with Yb
3+
ions.
Biography
Georgii Malashkevich defended his PhD degree in Physics
and Mathematics in 1978 from the Institute of Physics of
the BSSR Academy of Sciences and the Doctor of Science
degree in Physics and Mathematics in 2003 from the Institute
of Molecular and Atomic Physics of the NAS of Belarus. He is
the Head of the A N Sevchenko Laboratory of Photophysics of
ActivatedMaterials, B I Stepanov Institute of Physics of the NAS
of Belarus. He has published more than 80 papers in reputed
journals and about 100 patents on invention of Belarus, Russia
and the former USSR, as well as he is a member of the Advisory
Editorial Board of the
J Appl Spectros.
g.malashkevich@ifanbel.bas-net.byPhysicochemical, spectral-luminescent and lasing properties
of Yb-containing huntite-like glass
Georgii E Malashkevich
1
, Viktoryia V Kouhar
1
, Alexander A
Sukhodola
1
, Eugeny V Ivakin
1
, Efim V Pestryakov
2
, Viktor V
Petrov
2
, Vladimir N Sigaev
3
, Nikita V Golubev
3
, Marijam Z
Ziyatdinova
3
1
B I Stepanov Institute of Physics, NASB, Republic of Belarus
2
Institute of Laser Physics, SB RAS, Russia
3
D I Mendeleev University of Chemical Technology, Russia
Georgii E Malashkevich et al., Am J Compt Sci Inform Technol 2018, Volume 6
DOI: 10.21767/2349-3917-C1-002