Search Results - "KUTSENKO, A. B"

Charge transfer vibronic excitons and excitonic-type polaron states: photoluminescence in SBN by Vikhnin, V.S, Kislova, I, Kutsenko, A.B, Kapphan, S.E

“…A theoretical model for two characteristic photoluminescence (PL) bands in SBN, ‘green luminescence’ (GL-band), and ‘red luminescence’ (RL-band) is proposed on…”
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Site-selective spectroscopy of Er3+:Ti:LiNbO3 waveguides by DIEROLF, V, KUTSENKO, A. B, OSTENDORF, A, VON DER OSTEN, W, SOHLER, W, SUCHE, H

“…Starting from previous investigations in LiNbO3 bulk crystals, we studied the optical properties of Er ions in Ti:LiNbO3 channel waveguides and investigated…”
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Charge transfer vibronic excitons, bi-polarons, and iron group impurities in ferroelectric oxides: PbxNbyOz-Ceramics by VIKHNIN, V. S, ZAKHARCHENYA, R. I, ASATRYAN, H. R, KUTSENKO, A. B, KAPPHAN, S. E, EICKMEIER, H

“…The simulation of chemical fluctuation regions in the PMN-like relaxors by growth of the PbxNbyOz-ceramics was performed. The coexistence of PbxNbyOz-clusters…”
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Optical spectra of triply-charged rare-earth ions in polycrystalline corundum by Kaplyanskiĭ, A. A., Kulinkin, A. B., Kutsenko, A. B., Feofilov, S. P., Zakharchenya, R. I., Vasilevskaya, T. N.

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Absorption spectroscopy and energy levels of rare earth impurity centres in Srx Ba1-x Nb2O6 crystals by Demirbilek, R., Kutsenko, A. B., Pankrath, R., Kapphan, S. E.

“…The absorption spectra of Ce3+, Nd3+, Eu3+, Tb3+, Er3+, Tm3+ and Yb3+ rare earth (RE) impurity ions incorporated in Srx Ba1–x Nb2O6 (SBN) crystals were studied…”
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Investigation of Far Infrared Transitions of Ce3+ in Congruent SBN Crystals by DEMIRBILEK, R., KUTSENKO, A. B., PANKRATH, R., KAPPHAN, S. E.

“…Three relatively sharp FIR absorption bands of Ce 3+ in Strontium Barium Niobate (SBN) are observed in the 2000-3000 cm −1 region. A subband structure of these…”
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Light-Induced Polaronic Absorption at Low Temperature in Pure and (Fe, Ce, Cr) Doped SrxBa1-xNb2O6 or Ba1-yCayTiO3 Crystals and Photodissociation of Vis Centers Into Small Polarons by Kapphan, S. E., Kislova, I., Wierschem, M., Lindemann, T., Gao, M., Pankrath, R., Vikhnin, V. S., Kutsenko, A. B.

“…Congruent SBN and BCT crystals doped with Fe, Cr, Ce to enhance photorefractive properties, are investigated at low temperature (T > 1 K) under illumination…”
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Site-selectivity of up-conversion processes in Ti : Er : LiNbO3 waveguides by DIEROLF, V, KUTSENKO, A. B, VON DER OSTEN, W

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Polarons and charge-transfer vibronic excitons in ferroelectric oxides: EPR and photoluminescence studies of PbxNbyOz ceramics by Vikhnin, V. S, Zakharchenya, R. I, Asatryan, H. R, Kutsenko, A. B, Kapphan, S. E

“…We performed a simulation of the chemical fluctuation regions in the lead-magnesium-niobate-like relaxors by growing PbxNbyOz ceramics. The coexistence of…”
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Sol-gel synthesis and optical studies of rare earth and transition metal ions doped nanocrystalline aluminum and yttrium oxides by FEOFILOV, S. P, KAPLYANSKII, A. A, KULINKIN, A. B, KUTSENKO, A. B, VASILEVSKAYA, T. N, ZAKHARCHENYA, R. I

“…The paper reviews the studies of sol-gel produced nanocrystalline γ-Al2O3 and cubic Y2O3 doped with RE3+ and TM3+ ions. The effects of spatial confinement (on…”
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Crystal field analysis of different Er3+ sites in LiNbO3 by Dierolf, V., Sandmann, C., Kutsenko, A. B., Tröster, Th

“…The Er 3+ defect in lithium niobate (LiNbO 3 ), and the slightly different lattice environments ("sites") it experiences, have been investigated with combined…”
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Hydrostatic pressure induced splitting of recombination luminescence band in KTaO3 : Manifestation of charge transfer vibronic exciton phase by VIKHNIN, V. S, KUTSENKO, A. B, KAPPHAN, S. E

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Electron paramagnetic resonance of Er3+ ions in a polycrystalline α-Al2O3 by Asatryan, H. R., Zakharchenya, R. I., Kutsenko, A. B., Babunts, R. A., Baranov, P. G.

“…The EPR spectra of rare-earth Er3+ ions in a polycrystalline corundum α-Al2O3 synthesized by the sol-gel technology were revealed. It is shown that the EPR…”
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Optical characterization of Cr3+ centers in LiNbO3 by Basun, S.A., Kaplyanskii, A.A., Kutsenko, A.B., Dierolf, V., Troester, T., Kapphan, S.E., Polgar, K.

“…Low-temperature luminescence spectra of stoichiometric Cr:LiNbO3, congruent Cr:LiNbO3 and congruent Cr,Mg:LiNbO3 were studied. Dominant low-field and minor…”
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Optical Spectra, Properties and First Principles Computations of Ba(Fe, Nb)O3 and Pb(Fe, Nb)O3 by DEMIRBILEK, R., I., A., KUTSENKO, A. B., KAPPHAN, S. E., RAEVSKI, I. P., PROSANDEEV, S. A., BURTON, B., JASTRABIK, L., VIKHNIN, V. S.

“…Optical absorption in the IR region has been recorded and first-principles computations have been done for some Fe contining perovskites. The IR absorption…”
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High-resolution site selective optical spectroscopy of rare earth and transition metal defects in insulators by Dierolf, V, Kutsenko, A.B, Sandmann, C, Tröster, Th, Corradi, G

“…Focusing on Er 3+ ions in stoichiometric LiNbO 3 we demonstrate the application of the combined excitation emission spectroscopy to defect systems with…”
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Spectral line broadening mechanism of Er3+ transitions in Er:Ti:LiNbO3 channel waveguides by Dierolf, V., Kutsenko, A.B., Ostendorf, A., Sandmann, Chr

“…In order to elucidate the interaction effects among the various defects present in a LiNbO3-based integrated optical device, we investigated the change of the…”
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“Charge transfer–lattice” clusters induced by charged impurities by Vikhnin, V.S., Kaplyanskii, A.A., Kutsenko, A.B., Liu, G.K., Beitz, J.V., Kapphan, S.E.

“…A new type of self-consistent charge transfer–lattice states induced by charged impurities in their vicinity in ionic–covalent matrices are proposed and…”
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Optical Spectra, Properties and First Principles Computations of Ba(Fe, Nb)O 3 and Pb(Fe, Nb)O 3 by DEMIRBILEK, R., I., A., KUTSENKO, A. B., KAPPHAN, S. E., RAEVSKI, I. P., PROSANDEEV, S. A., BURTON, B., JASTRABIK, L., VIKHNIN, V. S.

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Dielectric and infrared response of Ba0.77Ca0.23TiO3 by Savinov, M E, Trepakov, V A, Kamba, S, Kapphan, S E, Petzelt, J, Pankrath, R, Kislova, I L, Kutsenko, A B, Jastrabik, L

“…Low-frequency (100 Hz-I MHz) dielectric permittivity and infrared reflectivity studies were performed for barium-calcium-titanate single crystals of the…”
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