2.0 μm emission properties and energy transfer processes of Yb3+/Ho3+ codoped germanate glass

2010 ◽  
Vol 108 (4) ◽  
pp. 043522 ◽  
Keyword(s):  
Energy Transfer ◽  
Germanate Glass ◽  
Emission Properties ◽  
Transfer Processes

scholarly journals Comparative Investigation on the Emission Properties of RAl3(BO3)4 (R = Pr, Eu, Tb, Dy, Tm, Yb) Crystals with the Huntite Structure

Crystals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 44 ◽  
Author(s):  
Enrico Cavalli ◽  
Nikolay Leonyuk
Keyword(s):  
Energy Transfer ◽  
Comparative Investigation ◽  
Concentration Quenching ◽  
Lattice Defects ◽  
Experimental Results ◽  
Luminescence Properties ◽  
Emission Properties ◽  
Transfer Processes ◽  
Decay Profile ◽  
Excitation Dynamics

The luminescence properties of RAl3(BO3)4 (RAB, with R = Pr, Eu, Tb, Dy, Tm, Yb) huntite crystals grown from K2Mo3O10 flux were systematically characterized in order to investigate their excitation dynamics, with particular reference to the concentration quenching that in these systems is incomplete. To this purpose, selected excitation, emission, and decay profile measurements on diluted R:YAB crystals were carried out and compared with those of the concentrated compounds. The effects of the energy transfer processes and of the lattice defects, as well as the ion-lattice interactions, have been taken into consideration in order to account for the experimental results.

scholarly journals Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb3+/Er3+/Tm3+

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2901
Author(s):  
Wojciech A. Pisarski ◽  
Joanna Pisarska ◽  
Radosław Lisiecki ◽  
Witold Ryba-Romanowski
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Infrared Emission ◽  
Relaxation Processes ◽  
Lead Germanate ◽  
Germanate Glass ◽  
Transfer Processes ◽  
Infrared Luminescence ◽  
Near Infrared Emission ◽  
Co Doped

This paper deals with broadband near-infrared luminescence properties of lead germanate glass triply doped with Yb3+/Er3+/Tm3+. Samples were excited at 800 nm and 975 nm. Their emission intensities and lifetimes depend significantly on Er3+ and Tm3+ concentrations. For samples excited at 800 nm, broadband emissions corresponding to the overlapped 3H4 → 3F4 (Tm3+) and 4I13/2 → 4I15/2 (Er3+) transitions centered at 1.45 µm and 1.5 µm was identified. Measurements of decay curves confirm reduction of 3H4 (Tm3+), 2F5/2 (Yb3+) and 4I13/2 (Er3+) luminescence lifetimes and the presence of energy-transfer processes. The maximal spectral bandwidth equal to 269 nm for the 3F4 → 3H6 transition of Tm3+ suggests that our glass co-doped with Yb3+/Er3+/Tm3+ is a good candidate for broadband near-infrared emission. The energy transfer from 4I13/2 (Er3+) to 3F4 (Tm3+) and cross-relaxation processes are responsible for the enhancement of broadband luminescence near 1.8 µm attributed to the 3F4 → 3H6 transition of thulium ions in lead germanate glass under excitation of Yb3+ ions at 975 nm.

~2 μm emission properties and energy transfer processes in Tm3+ doped Bi2O3-GeO2-Na2O glass laser material

2020 ◽  
Vol 224 ◽  
pp. 117314 ◽  
Author(s):  
Xiangyang Song ◽  
Kexuan Han ◽  
Dechun Zhou ◽  
Pengfei Xu ◽  
Xiaomeng Xue ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Glass Laser ◽  
Laser Material ◽  
Emission Properties ◽  
Transfer Processes

Energy transfer processes of working gas in pulse tube

2000 ◽  
Author(s):  
Vincenzo Naso ◽  
Marco Lucentini ◽  
Wei Dong
Keyword(s):  
Energy Transfer ◽  
Pulse Tube ◽  
Transfer Processes
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