Search Results - "Kalt, H"

65 years of ZnO research - old and very recent results by Klingshirn, Claus, Fallert, J., Zhou, H., Sartor, J., Thiele, C., Maier-Flaig, F., Schneider, D., Kalt, H.

“…The research on ZnO has a long history but experiences an extremely vivid revival during the last 10 years. We critically discuss in this didactical review old…”
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Robust label-free biosensing using microdisk laser arrays with on-chip references by Wondimu, S F, Hippler, M, Hussal, C, Hofmann, A, Krämmer, S, Lahann, J, Kalt, H, Freude, W, Koos, C

“…Whispering-gallery mode (WGM) microdisk lasers show great potential for highly sensitive label-free detection in large-scale sensor arrays. However, when used…”
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Exciton spin relaxation in strongly confining semiconductor quantum dots by Tsitsishvili, E., Kalt, H.

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Enhancement of the near-band-edge photoluminescence of ZnO nanowires: Important role of hydrogen incorporation versus plasmon resonances by Dev, A., Richters, J. P., Sartor, J., Kalt, H., Gutowski, J., Voss, T.

“…We investigated the photoluminescence properties of ZnO nanowires coated with Au, Ag, and Pt nanoparticles deposited by dc sputtering. A strong enhancement of…”
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Split-disk micro-lasers: Tunable whispering gallery mode cavities by Siegle, T., Remmel, M., Krämmer, S., Kalt, H.

“…Optical micro-cavities of various types have emerged as promising photonic structures, for both the investigation of fundamental science in cavity quantum…”
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Molecular beam epitaxy of phase pure cubic InN by Schörmann, J., As, D. J., Lischka, K., Schley, P., Goldhahn, R., Li, S. F., Löffler, W., Hetterich, M., Kalt, H.

“…Cubic InN layers were grown by plasma assisted molecular beam epitaxy on 3 C - Si C (001) substrates at growth temperatures from 419 to 490 ° C . X-ray…”
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Exciton-spin relaxation in quantum dots due to spin-orbit interaction by TSITSISHVILI, E, BALTZ, R. V, KALT, H

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Dependencies of micro-pillar cavity quality factors calculated with finite element methods by Karl, M, Kettner, B, Burger, S, Schmidt, F, Kalt, H, Hetterich, M

“…We present simulation results for optical modes in micro-pillar cavities that were computed with the finite element method and that show good agreement with…”
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Growth and annealing of InAs quantum dots on pre-structured GaAs substrates by Helfrich, M., Hu, D.Z., Hendrickson, J., Gehl, M., Rülke, D., Gröger, R., Litvinov, D., Linden, S., Wegener, M., Gerthsen, D., Schimmel, T., Hetterich, M., Kalt, H., Khitrova, G., Gibbs, H.M., Schaadt, D.M.

“…In this study, we investigated the effect of in situ annealing on InAs quantum dots site-selectively grown on pre-structured GaAs substrates. A morphological…”
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Stimulated emission from ZnO nanorods by Hauschild, R., Lange, H., Priller, H., Klingshirn, C., Kling, R., Waag, A., Fan, H. J., Zacharias, M., Kalt, H.

“…By means of time resolved spectroscopy we compare two samples of ZnO nanorods with respect to their suitability as stimulated emitters. In the case of narrow…”
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Linear and nonlinear optics, dynamics, and lasing in ZnO bulk and nanostructures by Klingshirn, C., Fallert, J., Gogolin, O., Wissinger, M., Hauschild, R., Hauser, M., Kalt, H., Zhou, H.

“…In linear optics, we report on measurements of the absolute external quantum efficiency of bulk ZnO and powders using an integrating sphere. At low temperature…”
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Lasing with guided modes in ZnO nanorods and nanowires by Zalamai, V. V., Ursaki, V. V., Klingshirn, C., Kalt, H., Emelchenko, G. A., Redkin, A. N.

“…A vertically arranged nearly parallel array of ZnO nanorods and randomly oriented nanowires has been grown by low pressure chemical vapor deposition (CVD) on…”
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Localized and delocalized modes in coupled optical micropillar cavities by Karl, M, Li, S, Passow, T, Löffler, W, Kalt, H, Hetterich, Mi

“…Optical micropillar Bragg cavities of different diameters and coupled by a small bridge have been realized experimentally by means of a focused ion beam…”
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Electrical spin injection from ZnMnSe into InGaAs quantum wells and quantum dots by Löffler, W., Tröndle, D., Fallert, J., Kalt, H., Litvinov, D., Gerthsen, D., Lupaca-Schomber, J., Passow, T., Daniel, B., Kvietkova, J., Grün, M., Klingshirn, C., Hetterich, M.

“…We report on efficient injection of electron spins into InGaAs-based nanostructures. The spin light-emitting diodes incorporate an InGaAs quantum well or…”
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Optical microcavities fabricated by DBR overgrowth of pyramidal-shaped GaAs mesas by Rülke, D., Karl, M., Hu, D.Z., Schaadt, D.M., Kalt, H., Hetterich, M.

“…Optical cavities have been fabricated by overgrowth of truncated GaAs pyramids with a distributed Bragg reflector. The success of this overgrowth depends…”
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Temperature-dependent luminescence dynamics in ZnO nanorods by Priller, H., Hauschild, R., Zeller, J., Klingshirn, C., Kalt, H., Kling, R., Reuss, F., Kirchner, Ch, Waag, A.

“…We report on an experimental study of the temporal photoluminescence dynamics of high-quality ZnO nanopillars from 10 K to room temperature. We find that…”
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Direct measurement of acoustic-phonon scattering of hot quantum-well excitons by HUI ZHAO, KALT, H

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Determination of critical thickness for defect formation of CdSe/ZnSe heterostructures by transmission electron microscopy and photoluminescence spectroscopy by Litvinov, D., Schowalter, M., Rosenauer, A., Daniel, B., Fallert, J., Löffler, W., Kalt, H., Hetterich, M.

“…We report on the investigation of CdSe/ZnSe heterostructures by transmission electron microscopy (TEM) and photoluminescence spectroscopy (PL). CdSe layers…”
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Impact of size upon lasing in ZnO microtetrapods by Zalamai, V. V., Ursaki, V. V., Tiginyanu, I. M., Burlacu, A., Rusu, E. V., Klingshirn, C., Fallert, J., Sartor, J., Kalt, H.

“…High optical quality, well end leg faceted ZnO microtetrapods with leg length between 1 and 12 μm have been grown by carbothermal chemical vapor deposition…”
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Growth and optical properties of phosphorus-doped ZnO nanowires by Kim, D.S., Fallert, J., Lotnyk, A., Scholz, R., Pippel, E., Senz, S., Kalt, H., Gösele, U., Zacharias, M.

“…Single-crystal phosphorus-doped ZnO nanowires were synthesized by using a single-source precursor-based vapor transport method. The photoluminescence spectra…”
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