Phase-structure transitions of glass-ceramics under IR-laser action: main peculiarities

2006 ◽  
Author(s):  
V. P. Veiko ◽  
B. Yu. Novikov ◽  
P. A. Skiba ◽  
E. B. Yakovlev
Keyword(s):  
Phase Structure ◽  
Laser Action ◽  
Glass Ceramics ◽  
Ir Laser

scholarly journals Generation of 16 Micrometer IR Laser by theOptical Pumping of CF4 Gas Molecules

2008 ◽  
Vol 5 (3) ◽  
pp. 457-459
Author(s):  
Baghdad Science Journal
Keyword(s):  
Co2 Laser ◽  
Optical Pumping ◽  
Laser Action ◽  
Laser Pulses ◽  
Tea Co2 Laser ◽  
Ir Laser ◽  
Gas Molecules ◽  
Output Laser

We report here the observation of 16 µm superradiance laser action generated from optical pumping of CF4 gas molecules (which is cooled to 140 Kº by a boil-off liquid-N2) by a TEA-CO2 laser 9R12 line. Output laser pulses of 7 mJ and 200 ns have been obtained.

IR laser action on fullerene-doped organic systems

2001 ◽  
Author(s):  
Natalia V. Kamanina ◽  
Ig. V. Bagrov ◽  
Inna M. Belousova ◽  
Aleksandr P. Zhevlakov
Keyword(s):  
Laser Action ◽  
Organic Systems ◽  
Ir Laser

Phase structure control and optical spectroscopy of rare-earth activated GdF3 nanocrystal embedded glass ceramics via alkaline-earth/alkali-metal doping

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 71176-71187 ◽  
Author(s):  
Shen Liu ◽  
Daqin Chen ◽  
Zhongyi Wan ◽  
Yang Zhou ◽  
Ping Huang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Alkali Metal ◽  
Optical Spectroscopy ◽  
Phase Structure ◽  
Alkaline Earth ◽  
Glass Ceramics ◽  
Glass Crystallization ◽  
Metal Doping ◽  
Structure Control

Alkaline-earth/alkali-metal dopant-induced hexagonal and orthorhombic GdF3 nanocrystal embedded glass ceramics were fabricated via glass crystallization.

Physical mechanisms of fast structure modification of glass-ceramics under CO 2 -laser action

2007 ◽  
Author(s):  
V. P. Veiko ◽  
Q. K. Kieu ◽  
B. Y. Novikov ◽  
E. A. Shakhno ◽  
E. B. Yakovlev
Keyword(s):  
Laser Action ◽  
Glass Ceramics ◽  
Structure Modification ◽  
Physical Mechanisms

The Crystallisation of B-Phase Glass-Ceramics

2006 ◽  
Vol 45 ◽  
pp. 30-35 ◽  
Author(s):  
L.K.L. Falk ◽  
Yvonne Menke ◽  
Stuart Hampshire
Keyword(s):  
Heat Treatment ◽  
Phase Structure ◽  
Composition Range ◽  
Glass Ceramics ◽  
Two Dimensional ◽  
Dimensional Network ◽  
Solid Solution Range ◽  
Cation Radius ◽  
Phase Glass ◽  
Random Substitution

Five-component B-phase may be readily formed through the nucleation and crystallisation heat treatment of nitrogen-rich parent glasses with composition (e/o) 35R:45Si:20Al:83O:17N. This paper is focussed on the B-phase structure where R stands for ytterbium, erbium or yttrium. Fine probe EDX analysis in the TEM has shown that the lenticular B-phase crystals take up a substantial range of composition and that the element R is always clearly anti-correlated with silicon. A larger R3+ cation radius moves the B-phase composition range to lower R contents, and as a consequence of the anti-correlation with silicon, the silicon solid solution range goes to higher values. The EDX results lend support to a B-phase structure consisting of two-dimensional network of randomly linked (Si,Al)(O,N)4 tetrahedra between layers of R3+ cations. It is suggested that, in addition to the random substitution of silicon by aluminium in the (Si,Al)(O,N)4 tetrahedra, a locally increased density in the bi-dimensional network of randomly oriented tetrahedra is associated with an increased density of vacancies in the R3+ cation lattice.

Fast and reversible phase-structure modifications of glass-ceramic materials under CO2-laser action

2007 ◽  
Author(s):  
V. P. Veiko ◽  
G. K. Kostyuk ◽  
N. V. Nikonorov ◽  
A. N. Rachinskaya ◽  
E. B. Yakovlev ◽  
...  
Keyword(s):  
Glass Ceramic ◽  
Phase Structure ◽  
Laser Action ◽  
Ceramic Materials ◽  
Glass Ceramic Materials ◽  
Reversible Phase
Sign in / Sign up

Export Citation Format

Share Document