Nanoparticle doping and molten-core methods towards highly thulium-doped silica fibers for 0.79 μm-pumped 2 μm fiber lasers – A fluorescence lifetime study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F24%3A00598316" target="_blank" >RIV/67985882:_____/24:00598316 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/24:43929781

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0022231324003995?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0022231324003995?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jlumin.2024.120835" target="_blank" >10.1016/j.jlumin.2024.120835</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nanoparticle doping and molten-core methods towards highly thulium-doped silica fibers for 0.79 μm-pumped 2 μm fiber lasers – A fluorescence lifetime study

Popis výsledku v původním jazyce

We study the fluorescence lifetime of Thulium-doped silica fibers for efficient laser operation in the 2 mu m ´eye-safe´ wavelength range pumped by 0.79 mu m radiation. A large set of optical fibers prepared by Modified Chemical Vapor Deposition combined with solution doping or nanoparticle doping, and Molten-core method is investigated in terms of fluorescence lifetimes of the 3 F 4 and 3 H 4 excited levels, which contain information about the Tm3+ 3 + ion environment, the rate of unwanted processes, such as concentration quenching or multiphonon relaxation, as well as the inter-ionic energy-transfer processes, including the cross-relaxation. Maximum evaluated lifetime values are 778 mu s for the 3 F 4 level and 56 mu s for the 3 H 4 level. From the lifetime study, we conclude that for Tm3+ 3 + concentrations above 10,000 ppm and enhanced aluminum concentrations above 5 mol. % Al2O3, 2 O 3 , the cross-relaxation efficiency is enhanced and multiphonon relaxation is remarkably reduced due to the lower phonon energy of the resulting alumino-silicate glass.

Název v anglickém jazyce

Nanoparticle doping and molten-core methods towards highly thulium-doped silica fibers for 0.79 μm-pumped 2 μm fiber lasers – A fluorescence lifetime study

Popis výsledku anglicky

We study the fluorescence lifetime of Thulium-doped silica fibers for efficient laser operation in the 2 mu m ´eye-safe´ wavelength range pumped by 0.79 mu m radiation. A large set of optical fibers prepared by Modified Chemical Vapor Deposition combined with solution doping or nanoparticle doping, and Molten-core method is investigated in terms of fluorescence lifetimes of the 3 F 4 and 3 H 4 excited levels, which contain information about the Tm3+ 3 + ion environment, the rate of unwanted processes, such as concentration quenching or multiphonon relaxation, as well as the inter-ionic energy-transfer processes, including the cross-relaxation. Maximum evaluated lifetime values are 778 mu s for the 3 F 4 level and 56 mu s for the 3 H 4 level. From the lifetime study, we conclude that for Tm3+ 3 + concentrations above 10,000 ppm and enhanced aluminum concentrations above 5 mol. % Al2O3, 2 O 3 , the cross-relaxation efficiency is enhanced and multiphonon relaxation is remarkably reduced due to the lower phonon energy of the resulting alumino-silicate glass.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Luminescence

ISSN

0022-2313

e-ISSN

1872-7883

Svazek periodika

275

Číslo periodika v rámci svazku

Nov

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

120835

Kód UT WoS článku

001293133700001

EID výsledku v databázi Scopus

2-s2.0-85200636018