@article{8711, author = {{Grbić, B. and Ellenberger, C. and Ihn, T. and Ensslin, K. and Reuter, Dirk and Wieck, A. D.}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, pages = {{2277--2279}}, title = {{{Magnetotransport in C-doped AlGaAs heterostructures}}}, doi = {{10.1063/1.1781750}}, year = {{2004}}, } @article{8712, author = {{Bryja, L. and Kubisa, M. and Ryczko, K. and Misiewicz, J. and Stȩpniewski, R. and Byszewski, M. and Potemski, M. and Reuter, Dirk and Wieck, A.}}, issn = {{0921-4526}}, journal = {{Physica B: Condensed Matter}}, pages = {{442--445}}, title = {{{Magnetic-field-induced excitons in photoluminescence from heavily doped p-type Ga1−xAlxAs/GaAs single heterojunction}}}, doi = {{10.1016/j.physb.2004.01.123}}, year = {{2004}}, } @article{8729, author = {{Ebbers, A. and Reuter, Dirk and Heuken, M. and Wieck, A.D.}}, issn = {{0749-6036}}, journal = {{Superlattices and Microstructures}}, pages = {{381--388}}, title = {{{In-plane gate transistors in AlxGa1−xN/GaN heterostructures written by focused ion beams}}}, doi = {{10.1016/j.spmi.2004.02.012}}, year = {{2004}}, } @article{8848, author = {{Tönnies, Merle}}, journal = {{Journal for the Study of British Cultures}}, number = {{2}}, pages = {{117--128}}, title = {{{New Britain as Consumer Country and Commodity}}}, volume = {{11}}, year = {{2004}}, } @inbook{9593, author = {{Beutner, Marc and Twardy, M}}, booktitle = {{Aktuelle Aspekte in Schule und wissenschaftlichem Unterricht. Studien und Berichte des IWP}}, editor = {{Dubs, R and Euler, D and Seitz, H}}, pages = {{181 -- 201}}, title = {{{Wirtschaftspädagogische Sichtweise der Spannungsverhältnisse in der Lehrerbildung vor dem Hintergrund des Lernfeldansatzes unter Berücksichtigung des Komplementärprinzips}}}, volume = {{Band 14}}, year = {{2004}}, } @inbook{9594, author = {{Beutner, Marc}}, booktitle = {{Zukunft der Berufsausbildung in Deutschland: Empirische Untersuchungen und Schlussfolgerungen. Berichte zur Beruflichen Bildung 273}}, editor = {{Krekel, E. M. and Walden, G.}}, pages = {{94 -- 110}}, title = {{{Ein Determinantenmodell der Ausbildungsbereitschaft von Klein- und Mittelbetrieben – Basis für eine systematische Förderung der Berufsausbildung}}}, year = {{2004}}, } @misc{9657, author = {{Tönnies, Merle}}, booktitle = {{Anglia}}, number = {{4}}, pages = {{758--761}}, title = {{{Mergenthal, S.: A Fast-Forward Version of England, 2003}}}, volume = {{122}}, year = {{2004}}, } @inproceedings{988, author = {{Niebert, Norbert and Flinck, Hannu and Hancock, Robert and Karl, Holger and Prehofer, Christian}}, booktitle = {{13th IST Mobile and Wireless Communications-Summit 2004}}, title = {{{Ambient Networks--Research for Communication Networks Beyond 3G}}}, year = {{2004}}, } @inproceedings{992, author = {{Gross, James and Paoluzzi, Irene and Karl, Holger and Wolisz, Adam}}, booktitle = {{Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th}}, pages = {{1787----1791}}, title = {{{Throughput study for a dynamic OFDM-FDMA system with inband signaling}}}, year = {{2004}}, } @article{993, author = {{Klimin, Nikolay and Enkelmann, Wilfried and Karl, Holger and Wolisz, Adam}}, journal = {{Proc. of WIT}}, title = {{{A hybrid approach for location-based service discovery in vehicular ad hoc networks}}}, year = {{2004}}, } @inproceedings{997, author = {{Carlson, Emma and Karl, Holger and Wolisz, Adam and Prehofer, Christian}}, booktitle = {{Proc. European Wireless}}, location = {{Barcelona/Spain}}, title = {{{Distributed allocation of time slots for real-time traffic in a wireless multi-hop network}}}, year = {{2004}}, } @article{998, author = {{Mengesha, Seble and Karl, Holger and Wolisz, Adam}}, journal = {{Proc. of MedHocNet 2004}}, title = {{{Capacity increase of multi-hop cellular wlans exploiting data rate adaptation and frequency recycling}}}, year = {{2004}}, } @article{4160, author = {{Hehenkamp, Burkhard and Leininger, W. and Possajennikov, A.}}, issn = {{0176-2680}}, journal = {{European Journal of Political Economy}}, number = {{4}}, pages = {{1045--1057}}, publisher = {{Elsevier BV}}, title = {{{Evolutionary equilibrium in Tullock contests: spite and overdissipation}}}, doi = {{10.1016/j.ejpoleco.2003.09.002}}, volume = {{20}}, year = {{2004}}, } @article{4270, abstract = {{The adiabatic driving of the resonant electron dynamics in a one-dimensional resonant photonic band gap is proposed as an optical mechanism for nonlinear ultrafast switching. Pulsed excitation inside the photonic gap results in an ultrafast suppression and recovery of the gap. This behavior results from the adiabatic carrier dynamics due to rapid radiative damping inside the band gap.}}, author = {{Schaarschmidt, Martin and Förstner, Jens and Knorr, Andreas and Prineas, John P. and Nielsen, Nils C. and Kuhl, Jürgen and Khitrova, Galina and Gibbs, Hyatt M. and Giessen, Harald and Koch, Stephan W.}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, keywords = {{tet_topic_qw}}, number = {{23}}, publisher = {{American Physical Society (APS)}}, title = {{{Adiabatically driven electron dynamics in a resonant photonic band gap: Optical switching of a Bragg periodic semiconductor}}}, doi = {{10.1103/physrevb.70.233302}}, volume = {{70}}, year = {{2004}}, } @article{4274, abstract = {{We present a theory of the optical line shape of coherent intersubband transitions in a semiconductor quantum well, considering non-Markovian LO-phonon scattering as major broadening mechanism. We show that a quantum kinetic approach leads to additional polaron resonances and a resonance enhancement for gap energies close to the phonon energy.}}, author = {{Butscher, S. and Förstner, Jens and Waldmüller, I. and Knorr, A.}}, issn = {{0370-1972}}, journal = {{physica status solidi (b)}}, keywords = {{tet_topic_qw}}, number = {{11}}, pages = {{R49--R51}}, publisher = {{Wiley}}, title = {{{Polaron signatures in the line shape of semiconductor ;intersubband transitions: quantum kinetics of the electron–phonon interaction}}}, doi = {{10.1002/pssb.200409053}}, volume = {{241}}, year = {{2004}}, } @article{4277, abstract = {{We investigate the temporal and spectral properties of subpicosecond pulses transmitted on the heavy-hole exciton transition through a multiple-quantum-well Bragg structure, exhibiting a one-dimensional photonic band gap. At low light intensities, a temporal propagation beating is observed. This beating is strongly dependent on the optical dephasing time T2 which is dominated by the radiative interwell coupling. In an intermediate intensity regime, the Pauli-blocking nonlinearity leads to gradual suppression of the photonic band gap and vanishing of the linear propagation beating. For highly nonlinear excitation, we find signatures of selfinduced transmission due to Rabi flopping and adiabatic following of the carrier density. Numerical simulations using the semiconductor Maxwell-Bloch equations are in excellent agreement with the experimental data up to intensities for which higher many-particle correlations become more important and self-phase modulation occurs in the sample substrate.}}, author = {{Nielsen, N. C. and Kuhl, J. and Schaarschmidt, M. and Förstner, Jens and Knorr, A. and Koch, S. W. and Khitrova, G. and Gibbs, H. M. and Giessen, H.}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, keywords = {{tet_topic_qw}}, number = {{7}}, publisher = {{American Physical Society (APS)}}, title = {{{Linear and nonlinear pulse propagation in a multiple-quantum-well photonic crystal}}}, doi = {{10.1103/physrevb.70.075306}}, volume = {{70}}, year = {{2004}}, } @inproceedings{4279, abstract = {{We demonstrate temporal and spatial pulse compression and modulational instabilities in the nonlinear defocusing regime near the band edge of bulk GaAs. Experiment and theory show that spatiotemporal coupling is responsible for these surprising phenomena.}}, author = {{Nielsen, Nils. C. and Siederdissen, Tilmann H. zu and Kuhl, Jürgen and Schaarschmidt, Martin and Förstner, Jens and Knorr, Andreas and Koch, Stephan W. and Giessen, Harald }}, booktitle = {{International Conference on Ultrafast Phenomena 2004}}, isbn = {{3-54024-110-8}}, keywords = {{tet_topic_polariton}}, location = {{Niigata (Japan)}}, publisher = {{Technical Digest (CD) (Optical Society of America, 2004)}}, title = {{{Subpicosecond spatiotemporal pulse compression in a nonlinear defocusing material}}}, year = {{2004}}, } @inproceedings{4280, abstract = {{Theoretically and experimentally, we investigate temporal phase evolution during Rabi-flopping on the A-exciton resonance in CdSe using a novel fast-scanning XFROG method and observe phase changes smaller than π/2 compared to the slightly-chirped input pulse.}}, author = {{Höner zu Siederdissen, Tilman and Nielsen, Nils Christian. and Kuhl, Jürgen and Förstner, Jens and Knorr, Andreas and Giessen, Harald}}, booktitle = {{International Quantum Electronics Conference and Photonic Applications Systems Technologies}}, isbn = {{1-55752-770-9}}, keywords = {{tet_topic_qd}}, location = {{San Francisco, California (USA)}}, publisher = {{OSA}}, title = {{{Temporal phase evolution during excitonic Rabi flopping in semiconductors}}}, doi = {{10.1364/iqec.2004.imb3}}, year = {{2004}}, } @inproceedings{4281, abstract = {{The coupled spatiotemporal characteristics of subpicosecond pulses propagating in the nonlinear defocusing regime near the band edge of bulk GaAs are investigated experimentally and theoretically. We demonstrate pulse compression both in time and transverse space.}}, author = {{Nielsen, Nils C. and Kuhl, Jürgen and Schaarschmidt, Martin and Förstner, Jens and Knorr, Andreas and Koch, Stephan W. and Giessen, Harald }}, booktitle = {{Conference on Lasers and Electro-Optics/International Quantum Electronics Conference and Photonic Applications Systems Technologies}}, isbn = {{1-55752-770-9}}, keywords = {{tet_topic_polariton}}, location = {{San Francisco, California (USA)}}, publisher = {{Technical Digest (CD) (Optical Society of America, 2004)}}, title = {{{Temporal and spatial compression of near-resonant pulses in a nonlinear defocusing semiconductor }}}, year = {{2004}}, } @inproceedings{4282, abstract = {{We investigate theoretically the ultrafast nonlinear suppression of the resonant photonic band gap by strong laser pulses in semiconductor multiple qnantum wells. We achieve good agreement with our measurements on reflection samples.}}, author = {{Schaarschmidt, Martin and Förstner, Jens and Knorr, Andreas and Prineas, John P. and Nielsen, Nils C. and Kuhl, Jürgen and Kithrova, Galina and Gibbs, Hyatt M. and Giessen, Harald and Koch, Stephan W.}}, booktitle = {{Conference on Lasers and Electro-Optics/International Quantum Electronics Conference and Photonic Applications Systems Technologies}}, isbn = {{1-55752-778-4 }}, keywords = {{tet_topic_qw}}, location = {{San Francisco, California (USA) }}, publisher = {{OSA}}, title = {{{Nonlinear light pulse propagation in Bragg-periodic multiple semiconductor quantum well samples: ultrafast switching of a resonant photonic band gap}}}, doi = {{10.1364/iqec.2004.iwa3}}, year = {{2004}}, }