Thulium-Doped Silica fibers with enhanced fluorescence lifetime and their application in ultrafast fiber lasers

Kód výsledku v IS VaVaI

RIV/67985882:_____/18:00499885 - isvavai.cz

Nalezeny alternativní kódy

RIV/60461373:22310/18:43917047

Výsledek na webu

http://dx.doi.org/10.3390/fib6030066

DOI - Digital Object Identifier

10.3390/fib6030066

Jazyk výsledku

angličtina

Název v původním jazyce

Thulium-Doped Silica fibers with enhanced fluorescence lifetime and their application in ultrafast fiber lasers

Popis výsledku v původním jazyce

In this work we report on the thulium-doped silica-based optical fibers with increased fluorescence lifetime of the F-3(4) level thanks to the modification of the local environment of thulium ions by high content of alumina. The determination of the cross-relaxation energy-transfer coefficients from the measurements of the fluorescence lifetimes of the F-3(4) and H-3(4) energy levels of Tm3+ ions in the experimentally prepared optical fiber is provided as well. Preforms of optical fibers were prepared either by conventional solution-doping of Tm3+ and Al3+ ions or by dispersion-doping of Tm3+ ions with alumina nanoparticles. Optical fibers were characterized by means of Tm, Al, and Ge concentrations, refractive index profiles, optical spectral absorption and luminescence, and by time-resolved fluorescence spectroscopy. Highly aluminium-codoped thulium silicate optical fibers exhibited fluorescence lifetimes of over similar to 500 s with maximum value of 756 s, which means a fluorescence lifetime enhancement when compared to the thulium-doped fibers reported elsewhere. We show an application of the thulium-doped fiber in a compact all-fiber ring laser that is passively mode-locked by using graphene-based saturable absorber. The output pulsewidth and repetition rate were 905 fs and 32.67 MHz, respectively

Název v anglickém jazyce

Thulium-Doped Silica fibers with enhanced fluorescence lifetime and their application in ultrafast fiber lasers

Popis výsledku anglicky

In this work we report on the thulium-doped silica-based optical fibers with increased fluorescence lifetime of the F-3(4) level thanks to the modification of the local environment of thulium ions by high content of alumina. The determination of the cross-relaxation energy-transfer coefficients from the measurements of the fluorescence lifetimes of the F-3(4) and H-3(4) energy levels of Tm3+ ions in the experimentally prepared optical fiber is provided as well. Preforms of optical fibers were prepared either by conventional solution-doping of Tm3+ and Al3+ ions or by dispersion-doping of Tm3+ ions with alumina nanoparticles. Optical fibers were characterized by means of Tm, Al, and Ge concentrations, refractive index profiles, optical spectral absorption and luminescence, and by time-resolved fluorescence spectroscopy. Highly aluminium-codoped thulium silicate optical fibers exhibited fluorescence lifetimes of over similar to 500 s with maximum value of 756 s, which means a fluorescence lifetime enhancement when compared to the thulium-doped fibers reported elsewhere. We show an application of the thulium-doped fiber in a compact all-fiber ring laser that is passively mode-locked by using graphene-based saturable absorber. The output pulsewidth and repetition rate were 905 fs and 32.67 MHz, respectively

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

GA17-20049S: Nová optická vlákna a jejich spektroskopie pro vláknové lasery pracující ve spektrální oblasti za 2 μm

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

FIBERS

ISSN

2079-6439

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

15

Strana od-do

—

Kód UT WoS článku

000448397500024

EID výsledku v databázi Scopus

2-s2.0-85053817280