Browsing by Author "Lisiecki, R."

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    Nature of Intrinsic Luminescence of the Undoped Borate Glasses
    (2017-05-29) Kindrat, I. I.; Padlyak, B. V.; Mahlik, S.; Kukliński, B.; Lisiecki, R.; University of Zielona Góra, Institute of Physics, Division of Spectroscopy of Functional Materials; a Szafrana Str., 65-516 Zielona Góra, Poland; Vlokh Institute of Physical Optics, Sector of Spectroscopy, 23 Dragomanov Str., 79-005 Lviv, Ukraine; University of Gdańsk, Institute of Experimental Physics, Condensed Matter Spectroscopy Division; Wita Stwosza Str., 80-952 Gdańsk, Poland; Institute of Low Temperature and Structure Research Polish Academy of Sciences, Division of Optical; Spectroscopy, 2 Okólna Str., 50-422 Wrocław, Poland
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    Optical spectroscopy of Nd-doped borate glasses
    (Видавництво Львівської політехніки, 2012) Padlyak, B. V.; Ryba-Romanowski, W.; Lisiecki, R.; Adamiv, V. T.; Burak, Ya. V.; Teslyuk, I. M.
    Optical absorption, luminescence excitation and emission spectra as well as luminescence kinetics of the Nd3+ centres in glasses with Li2B4O7:Nd, LiCaBO3:Nd, and CaB4O7:Nd compositions containing 0.5 and 1.0 mol. % Nd2O3 have been investigated and analyzed. Using Judd-Ofelt theory oscillator strengths (f) and phenomenological intensity parameters W t ( W 2, W 4, and W 6) for all investigated glasses were determined. Radiative transitions rates (Wr), radiative lifetimes (τrad), and branching ratios (β) for Nd3+ centres have been calculated. Measured lifetimes for Nd3+ centres in the 4F3/2 emitting level are compared with those calculated and quantum efficiency (h) have been estimated.
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    Optical spectroscopy of Nd3+ luminescence centres in the Sr4B14O25:Nd crystal
    (Видавництво національного університету “Львівська політехніка”, 2009) Padlyak, B. V.; Ryba-Romanowski, W.; Lisiecki, R.; Oseledchik, Yu. S.; Prosvirnin, A. L.; Kudryavtcev, D. P.; Svitanko, N. V.
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    Optical studies and spectroscopic peculiarities of dysprosium doped Gd2SiO5 single crystals
    (Видавництво національного університету „Львівська політехніка”, 2009) Lisiecki, R.; Solarz, P.; Dominiak-Dzik, G.; Ryba-Romanowski, W.; Berkowski, M.; Głowacki, M.