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Wyszukujesz frazę "68.60.-p" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Light Emission Properties of GaN-Based Laser Diode Structures
    Autorzy:
    Godlewski, M.
    Phillips, M. R.
    Czernecki, R.
    Targowski, G.
    Perlin, P.
    Leszczyński, M.
    Figge, S.
    Hommel, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2043715.pdf
    Data publikacji:
    2005-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    85.30.-z
    78.60.Hk
    68.37.Hk
    Opis:
    Cathodoluminescence is applied for evaluation of in-depth and in-plane variations of light emission from two types of GaN-based laser diode structures. We evaluate in-depth properties of the laser diode emission and demonstrate that potential fluctuations still affect emission of laser diodes for e-beam currents above thresholds for a stimulated emission.
    Źródło:
    Acta Physica Polonica A; 2005, 108, 4; 675-680
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of selected organic compounds on the corrosion of historical glass based on their state of preservation
    Autorzy:
    Greiner-Wronowa, E.
    Świt, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1058515.pdf
    Data publikacji:
    2016-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    89.90.+n
    61.43.Fs
    07.60.Pb
    68.37.-d
    68.37.Hk
    81.70.-q
    07.07.Df
    07.75.+h
    81.40.Np
    Opis:
    The aim of this study was to investigate the influence of selected organic compounds such as acetic acid and formaldehyde on the historical glass objects of corrosion processes. This is a very important problem for the field of conservation and restoration of glass of art. Glass objects exhibited in museum display cases can be suffered by evaporating organic compounds which undergo to reaction with leached glass elements to create corrosion deposit on their surface. The proposed method called glass sensors has been used to identify results of impact of various external factors on the tested glass. Due to aggressive environment for the objects there created corrosion phenomena. Glass sensor were prepared as reproduced XVIII-cent. materials. The current studies were carried out by modern physico-chemical methods such as optical, metallography, scanning electron microscopy, inductively coupled plasma mass spectrometry and the Fourier transform infrared spectrometry. These techniques allow to determine the composition of the corrosion layers as well as their structure. The issues raised in this work have been studied following an interdisciplinary approach. The information obtained by using different techniques provides a valuable source of knowledge about the chemical reactions taking place on the surface of the glass. The results derived from this work are useful for the design and implementation of exhibition recommendations and better planning of conservation tasks.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 6; 1406-1414
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relationship between Sample Morphology and Carrier Diffusion Length in GaN Thin Films
    Autorzy:
    Godlewski, M.
    Goldys, E. M.
    Phillips, M.
    Böttcher, T.
    Figge, S.
    Hommel, D.
    Czernecki, R.
    Prystawko, P.
    Leszczynski, M.
    Perlin, P.
    Wisniewski, P.
    Suski, T.
    Bockowski, M.
    Grzegory, I.
    Porowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2035593.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.72.Ff
    61.72.Mm
    68.37.Hk
    78.60.Hk
    Opis:
    Scanning and spot-mode cathodoluminescence investigations of homo- and hetero-epitaxial GaN films indicate a surprisingly small influence of their microstructure on overall intensity of a light emission. This we explain by a correlation between structural quality of these films and diffusion length of free carriers and excitons. Diffusion length increases with improving structural quality of the samples, which, in turn, enhances the rate of nonradiative recombination on structural defects, such as dislocations.
    Źródło:
    Acta Physica Polonica A; 2002, 102, 4-5; 627-632
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cathodoluminescence Profiling of InGaN-Based Quantum Well Structures and Laser Diodes - In-Plane Instabilities of Light Emission
    Autorzy:
    Godlewski, M.
    Ivanov, V. Yu.
    Goldys, E. M.
    Phillips, M.
    Böttcher, T.
    Figge, S.
    Hommel, D.
    Czernecki, R.
    Prystawko, P.
    Leszczynski, M.
    Perlin, P.
    Grzegory, I.
    Porowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2036870.pdf
    Data publikacji:
    2003-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.72.Ff
    61.72.Mm
    68.37.Hk
    78.60.Hk
    Opis:
    Instabilities of light emission and also of stimulated emission in series of GaN epilayers and InGaN quantum well structures, including laser diode structures, are studied. A stimulated emission is observed under electron beam pumping. This enabled us to study light emission properties from laser structures and their relation to microstructure details. We demonstrate large in-plane fluctuations of light emission and that these fluctuations are also present for excitation densities larger than the threshold densities for the stimulated emission.
    Źródło:
    Acta Physica Polonica A; 2003, 103, 6; 689-694
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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