Open AccessBismuth-doped hafnia-yttria-alumina-silica based fiber: spectral characterization in NIR to mid-IR
Author(s) -
Alexander V. Kir’yanov,
Salim Hassan Siddiki,
Yuri O. Barmenkov,
Dipak Kumar Dutta,
Anirban Dhar,
Shyamal Das,
Mukul Chandra Paul
Publication year - 2017
Publication title -
optical materials express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 66
ISSN - 2159-3930
DOI - 10.1364/ome.7.003548
Subject(s) - materials science , hafnia , fiber laser , doping , optoelectronics , absorption (acoustics) , absorption band , silica fiber , optical fiber , analytical chemistry (journal) , fiber , optics , wavelength , ceramic , cubic zirconia , physics , composite material , chemistry , chromatography
We report an experimental analysis of new hafnia-yttria-alumina-silica glass based fiber doped with bismuth (Bi), with absorption/fluorescence spectra along with resonant-absorption saturation, fluorescence lifetime, and gain, all adherent to Bi-related active centers (BACs), being measured at laser-diode excitation @ 908, 976, 1069, and 1120 nm, matching the NIR BACs' band. The found spectral laws reveal the optimal on excitation wavelength fluorescence, resonant-absorption bleaching, and gain capacities of the fiber, useful for applications at diode pumping. Besides, we report, for the first time to the best of our knowledge, a new resonant-absorption band of BACs in mid-IR (similar to 2.1 mu m) in the fiber, effectively bleached under the action of low-power in-band excitation, and provide the reasons for its association with co-doping the fiber with hafnium. (C) 2017 Optical Society of America
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