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Special optical fibers doped with nanocrystalline holmium-yttrium titanates (HoxY1-x)(2)Ti2O7 for fiber-lasers
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SYSNO ASEP 0457491 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Special optical fibers doped with nanocrystalline holmium-yttrium titanates (HoxY1-x)(2)Ti2O7 for fiber-lasers Tvůrce(i) Mrázek, Jan (URE-Y) RID, ORCID
Kašík, Ivan (URE-Y) RID
Boháček, Jan (URE-Y)
Proboštová, Jana (URE-Y)
Aubrecht, Ivo (URE-Y)
Podrazký, Ondřej (URE-Y) RID
Cajzl, Jakub (URE-Y)
Honzátko, Pavel (URE-Y) RIDCelkový počet autorů 8 Zdroj.dok. MICRO-STRUCTURED AND SPECIALTY OPTICAL FIBRES IV, 9507. - Bellingham : SPIE, 2015 / Kalli Kyriacos ; Kaňka Jiří ; Mendez Alexis - ISSN 0277-786X - ISBN 978-1-62841-628-2 Rozsah stran s. 9507031-9507038 Poč.str. 8 s. Forma vydání Tištěná - P Akce Conference on Micro-Structured and Specialty Optical Fibres IV Datum konání 15.04.2015 - 16.04.2015 Místo konání Prague Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Luminescence ; Nanocrystals ; Fiber-laser Vědní obor RIV JA - Elektronika a optoelektronika, elektrotechnika Institucionální podpora URE-Y - RVO:67985882 UT WOS 000356703700002 EID SCOPUS 84943369218 DOI 10.1117/12.2179351 Anotace The paper deals with the preparation and characterization of the silica optical fibers doped with nanocrystalline holmium-yttrium titanates (HoxY1-x)(2)Ti2O7 with optimized luminescence properties. The sol-gel approach was employed to prepare colloidal solution of (HoxY1-x)(2)Ti2O7 precursors. The concentration of Ho3+ ions in the compounds was varied up to x=0.4. Prepared sols were calcined at 1000 degrees C forming xerogels which were characterized by X-ray diffraction to confirm their structure. The xerogels were analyzed by the mean of steady-state luminescence technique to optimize the concentration of Ho3+ ions in the compound. The most intensive emission at 2050 nm was observed for the compound (Ho5Y95)(2)Ti2O7. Sol of the corresponding composition was soaked into the porous silica frit deposed inside the silica substrate tube which was collapsed into preform and drawn into optical fiber. Single mode optical fiber with the core diameter 12 mu m and outer diameter 125 mu m was prepared. Numerical aperture of prepared fiber was 0.16. The concentration of Ho3+ ions in the fiber core was 0.03 at. %. Background attenuation of prepared fiber at 850 nm was smaller than 0.5 dB.m(-1) Pracoviště Ústav fotoniky a elektroniky Kontakt Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Rok sběru 2016
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