Počet záznamů: 1
Thulium-Doped Silica fibers with enhanced fluorescence lifetime and their application in ultrafast fiber lasers
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SYSNO ASEP 0499885 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Thulium-Doped Silica fibers with enhanced fluorescence lifetime and their application in ultrafast fiber lasers Tvůrce(i) Cajzl, Jakub (URE-Y)
Peterka, Pavel (URE-Y) RID
Kowalczyk, M. (PL)
Tarka, J. (PL)
Sobon, G. (PL)
Sotor, J. (PL)
Aubrecht, Jan (URE-Y) RID
Honzátko, Pavel (URE-Y) RID
Kašík, Ivan (URE-Y) RIDCelkový počet autorů 9 Číslo článku 66 Zdroj.dok. FIBERS. - : MDPI - ISSN 2079-6439
Roč. 6, č. 3 (2018)Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova Energy transfer ; Cross-relaxation ; Fiber lasers Vědní obor RIV BH - Optika, masery a lasery Obor OECD Optics (including laser optics and quantum optics) CEP GA17-20049S GA ČR - Grantová agentura ČR Institucionální podpora URE-Y - RVO:67985882 UT WOS 000448397500024 EID SCOPUS 85053817280 DOI 10.3390/fib6030066 Anotace 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 Pracoviště Ústav fotoniky a elektroniky Kontakt Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Rok sběru 2019
Počet záznamů: 1