Energy transfer kinetics in oxy-fluoride glass and glass-ceramics doped with rare-earth ions

2012 ◽  
Vol 112 (1) ◽  
pp. 013510 ◽  
Author(s):  
Atul D. Sontakke ◽  
K. Annapurna
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Glass Ceramics ◽  
Rare Earth Ions ◽  
Fluoride Glass

Suppressed energy transfer between different rare earth ions to obtain enhanced and tuned fluorescence by using Janus nanofibers

2021 ◽  
Author(s):  
Ping Wu ◽  
Qianli Ma ◽  
Wensheng Yu ◽  
Jinxian Wang ◽  
Gui-Xia Liu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Rare Earth Ions ◽  
Native Fluorescence ◽  
Fluorescent Materials ◽  
Negative Effect

Here, we put forward a viewpoint that the energy transfer between different rare earth (RE) ions plays negative effect in RE ions doped white fluorescent materials if the native fluorescence...

scholarly journals Кинетика нарастания ап-конверсионной люминесценции кристалла LiY-=SUB=-0.8-=/SUB=-Yb-=SUB=-0.2-=/SUB=-F-=SUB=-4-=/SUB=- : Tm-=SUP=-3+-=/SUP=- (0.2 at.%) при импульсном возбуждении

2019 ◽  
Vol 61 (5) ◽  
pp. 953
Author(s):  
А.В. Михеев ◽  
Б.Н. Казаков
Keyword(s):  
Regression Analysis ◽  
Energy Transfer ◽  
Rare Earth ◽  
Laser Diode ◽  
Rare Earth Ions ◽  
Experimental Conditions ◽  
Pulsed Excitation ◽  
Transfer Processes ◽  
Dipole Interactions ◽  
Kinetics Of

AbstractThe regression analysis of the rise kinetics of up-conversion luminescence of the LiY_0.8Yb_0.2F_4:Tm^3+ (0.2 at %) crystal is performed. The kinetics curve is obtained with rectangular pulsed excitation by radiation from a laser diode (IR LD) with a wavelength of λ_ p = 933 nm. The most important—in these experimental conditions—mechanisms of the energy transfer from Yb^3+ ions to Tm^3+ ions are established, which are responsible for the transitions between the ground ^3 H _6 and excited ^3 F _4, ^3 H _4, ^1 G _4, ^1 D _2, and ^1 I _6 terms of the Tm^3+ ions. The durations of the relevant energy transfer processes are determined. It is shown that the energy transfer between rare earth ions in the LiY_0.8Yb_0.2F_4:Tm^3+ (0.2 at %) crystal occurs through the dipole–dipole interactions.

scholarly journals SiO2-SnO2:Er3+ Glass-Ceramic Monoliths

2018 ◽  
Author(s):  
Lam Thi Ngoc Tran ◽  
Damiano Massella ◽  
Lidia Zur ◽  
Alessandro Chiasera ◽  
Stefano Varas ◽  
...  
Keyword(s):  
Rare Earth ◽  
Optical Sensors ◽  
Tin Dioxide ◽  
Sol Gel ◽  
Glass Ceramics ◽  
Building Blocks ◽  
Spectroscopic Properties ◽  
Silica Matrix ◽  
Rare Earth Ions ◽  
Planar Waveguides

The development of efficient luminescent systems, such as microcavities, solid state lasers, integrated optical amplifiers, optical sensors is the main topic in glass photonics. The building blocks of these systems are glass-ceramics activated by rare earth ions because they exhibit specific morphologic, structural and spectroscopic properties. Among various materials that could be used as nanocrystals to be imbedded in silica matrix, tin dioxide presents some interesting peculiarities, e.g. the presence of tin dioxide nanocrystals allows increase in both solubility and emission of rare earth ions. Here, we focus our attention on Er3+ - doped silica – tin dioxide photonic glass-ceramics fabricated by sol-gel route. Although the SiO2-SnO2:Er3+ could be fabricated in different geometrical systems: thin films, monoliths and planar waveguides we herein limit ourselves to the monoliths. The effective role of tin dioxide as luminescence sensitizer for Er3+ ions is confirmed by spectroscopic measurements and detailed fabrication protocols are discussed.

Structural evolution of luminescence nanoparticles with rare-earth ions in the oxyfluoride glass ceramics

2019 ◽  
Vol 237 ◽  
pp. 121830 ◽  
Author(s):  
S.E. Kichanov ◽  
Yu.E. Gorshkova ◽  
G.E. Rachkovskaya ◽  
D.P. Kozlenko ◽  
G.B. Zakharevich ◽  
...  
Keyword(s):  
Rare Earth ◽  
Glass Ceramics ◽  
Structural Evolution ◽  
Rare Earth Ions ◽  
Oxyfluoride Glass
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