Zobrazeno 1 - 10
of 27
pro vyhledávání: '"B, Schoke"'
Publikováno v:
physica status solidi (RRL) - Rapid Research Letters. 2:284-286
Transient light-induced absorption changes αli(t), caused by optically generated small polarons, are investigated in LiNbO3:Mg below and above the optical-damage-resistance threshold (ODRT). The lifetime of αli(t) is reduced by three orders of magn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4090b3b5d39a0152c41ed85d16d7254
https://doi.org/10.1002/pssr.200802176
https://doi.org/10.1002/pssr.200802176
Publikováno v:
Optics express. 20(12)
Diffraction efficiency, relaxation behavior and dependence on pump-beam intensity of small-polaron based holograms are studied in thermally reduced, nominally undoped lithium niobate in the visible spectrum (λ = 488 nm). The pronounced phase grating
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5a1e7d2c1079b735366ef0159135b0eb
https://pubmed.ncbi.nlm.nih.gov/22714361
https://pubmed.ncbi.nlm.nih.gov/22714361
Publikováno v:
Physical Review B. 84
A microscopic model for the nonexponential relaxation of localized-charge carrier densities in oxide crystals is derived by taking into account thermally activated diffusive hopping transport and the effect of trap saturation. Thereby it is shown tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a531d51449dfadf6b64eed00b897043
https://doi.org/10.1103/physrevb.84.052302
https://doi.org/10.1103/physrevb.84.052302
Autor:
I. I. Naumova, Christoph Merschjann, H. Brüning, B. Schoke, Gábor Corradi, K. Polgár, Mirco Imlau
Publikováno v:
Physical Review B. 81
The study of the transient light-induced absorption in thermally reduced, periodically poled lithium niobate doped with Y uncovers the simultaneous action of the ${\text{Nb}}_{\text{Li}}^{4+}:{\text{Nb}}_{\text{Nb}}^{4+}$ bipolaron and ${\text{O}}^{\
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b92d344dec59e64824a84e909ac7a8e7
https://doi.org/10.1103/physrevb.81.132301
https://doi.org/10.1103/physrevb.81.132301
Autor:
C. Merschjann, O. F. Schirmer, A. Gross, Mirco Imlau, Sophie Vernay, V. Wesemann, Stefan Torbrügge, Daniel Rytz, B. Schoke
Publikováno v:
Physical Review B. 78
Transient light-induced absorption in nominally undoped and Fe-doped ${\text{KNbO}}_{3}$ crystals is observed in the visible and infrared spectral ranges after single pulse illumination with $\ensuremath{\lambda}=532\text{ }\text{nm}$. For nominally
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::805ab06439e39e075566b498f0c7c4f0
https://doi.org/10.1103/physrevb.78.125112
https://doi.org/10.1103/physrevb.78.125112
Publikováno v:
Physical Review B. 76
The influence of chemical reduction on the particular number densities of light-induced free small ${\mathrm{Nb}}_{\mathrm{Nb}}^{4+}$ electron polarons, bound small ${\mathrm{Nb}}_{\mathrm{Li}}^{4+}$ electron polarons, bound small ${\mathrm{Nb}}_{\ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a32fc67512b1a62c487a84b1a10cb6a3
https://doi.org/10.1103/physrevb.76.085114
https://doi.org/10.1103/physrevb.76.085114
Publikováno v:
Controlling Light with Light: Photorefractive Effects, Photosensitivity, Fiber Gratings, Photonic Materials and More.
The polaronic light-induced absorption αli(t) is investigated in LiNbO3:Mg via ESA spectroscopy. In comparison with nominally pure LiNbO3, changes in the lifetime of αli(t) are found and attributed to changes in the intrinsic defect structure.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f1b67cd2b26074b39f0c9743435065e
https://doi.org/10.1364/pr.2007.mb3
https://doi.org/10.1364/pr.2007.mb3
Publikováno v:
Scopus-Elsevier
Polaronic light-induced absorption αli(t) is investigated in nominally pure, congruently melting LiNbO3via ESA spectroscopy. Chemical reduction affects the amplitudes of αli(t), i.e. the number densities of electron and hole polarons, leaving their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9c0735f07503e733cecd86ba6e346c5
https://doi.org/10.1364/pr.2007.sub5
https://doi.org/10.1364/pr.2007.sub5
Autor:
Volker Dieckmann, M. Imlau, Christoph Merschjann, Kay-Michael Voit, B. Schoke, Hauke Brüning, Gábor Corradi
Publikováno v:
Optics Express. 20:13326
Diffraction efficiency, relaxation behavior and dependence on pump-beam intensity of small-polaron based holograms are studied in thermally reduced, nominally undoped lithium niobate in the visible spectrum (λ = 488 nm). The pronounced phase grating
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7645eecf39396b9a5eafd940071a9a26
https://doi.org/10.1364/oe.20.013326
https://doi.org/10.1364/oe.20.013326
Publikováno v:
Journal of Physics: Condensed Matter. 21:123201
An overview of the properties of electron small polarons and bipolarons is given, which can occur in the congruently melting composition of LiNbO(3) (LN). Such polarons influence the performance of this important optical material decisively. Since co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0506b071d28c6881411462c8ace6c8a2
https://doi.org/10.1088/0953-8984/21/12/123201
https://doi.org/10.1088/0953-8984/21/12/123201