@article{3884, abstract = {{e study the discrete soliton formation in one- and two- dimensional arrays of nanowires coated with graphene monolayers. Highly confined solitons, including the fundamental and the higher-order modes, are found to be supported by the proposed structure with a low level of power flow. Numerical analysis reveals that, by tuning the input intensity and Fermi energy, the beam diffraction, soliton dimension and propagation loss can be fully controlled in a broad range, indicating potential values of the graphene-based solitons in nonlinear/active nanophotonic systems. }}, author = {{Kou, Yao and Förstner, Jens}}, issn = {{1094-4087}}, journal = {{Optics Express}}, keywords = {{tet_topic_plasmonics, tet_topic_polariton}}, number = {{5}}, pages = {{4714}}, publisher = {{The Optical Society}}, title = {{{Discrete plasmonic solitons in graphene-coated nanowire arrays}}}, doi = {{10.1364/oe.24.004714}}, volume = {{24}}, year = {{2016}}, } @article{3896, abstract = {{We study the formation of subwavelength solitons in binary metal-dielectric lattices. We show that the transverse modulation of the lattice constant breaks the fundamental plasmonic band and suppresses the discrete diffraction of surface plasmon waves. New types of plasmonic solitons are found, and their characteristics are analyzed. We also demonstrate the existence of photonic-plasmonic vector solitons and elucidate their propagation properties.}}, author = {{Kou, Yao and Förstner, Jens}}, issn = {{0146-9592}}, journal = {{Optics Letters}}, keywords = {{tet_topic_polariton}}, number = {{6}}, pages = {{851--854}}, publisher = {{The Optical Society}}, title = {{{Subwavelength binary plasmonic solitons}}}, doi = {{10.1364/ol.40.000851}}, volume = {{40}}, year = {{2015}}, } @article{4256, abstract = {{We present phase-resolved pulse propagation measurements that allow us to fully describe the transition between several light–matter interaction regimes. The complete range from linear excitation to the breakdown of the photonic bandgap on to self-induced transmission and self-phase modulation is studied on a high-quality multiple-quantum-well Bragg structure. An improved fast-scanning cross-correlation frequency-resolved optical gating setup is applied to retrieve the pulse phase with an excellent signal-tonoise ratio. Calculations using the semiconductor Maxwell–Bloch equations show qualitative agreement with the experimental findings. }}, author = {{zu Siederdissen, Tilman Höner and Nielsen, Nils C. and Kuhl, Jürgen and Schaarschmidt, Martin and Förstner, Jens and Knorr, Andreas and Khitrova, Galina and Gibbs, Hyatt M. and Koch, Stephan W. and Giessen, Harald}}, issn = {{0146-9592}}, journal = {{Optics Letters}}, keywords = {{tet_topic_polariton, tet_topic_qw}}, number = {{11}}, publisher = {{The Optical Society}}, title = {{{Transition between different coherent light–matter interaction regimes analyzed by phase-resolved pulse propagation}}}, doi = {{10.1364/ol.30.001384}}, volume = {{30}}, year = {{2008}}, } @article{4303, abstract = {{The interaction of strong low-area pulses with two-level systems shows absorption line narrowing and hole burning within the homogeneous linewidth as a result of nonlinear wave mixing. The wave mixing results from the two-level electronic saturation nonlinearity and occurs, depending on the sign of the pulse area, as a strong absorption enhancement or gain at the transition frequency of the two-level system for resonant excitation.}}, author = {{Förstner, Jens and Knorr, A. and Lindberg, M. and Koch, S. W.}}, issn = {{0146-9592}}, journal = {{Optics Letters}}, keywords = {{tet_topic_polariton}}, number = {{20}}, publisher = {{The Optical Society}}, title = {{{Line narrowing and hole burning within the homogeneous linewidth: a new wave-mixing effect in two-level systems}}}, doi = {{10.1364/ol.27.001830}}, volume = {{27}}, year = {{2007}}, } @inbook{4269, abstract = {{We investigate the spatiotemporal characteristics of subpicosecond pulse propagation in the nonlinear defocusing regime below the band edge of bulk GaAs. We observe temporal and spatial pulse compression and instabilities.}}, author = {{Nielsen, N. C. and zu Höner Siederdissen, T. and Kuhl, J. and Schaarschmidt, M. and Förstner, Jens and Knorr, A. and Koch, S. W. and Giessen, H.}}, booktitle = {{Springer Series in Chemical Physics}}, isbn = {{9783540241102}}, issn = {{0172-6218}}, keywords = {{tet_topic_polariton}}, pages = {{19--21}}, publisher = {{Springer Berlin Heidelberg}}, title = {{{Temporal and Spatial Pulse Compression in a Nonlinear Defocusing Material}}}, doi = {{10.1007/3-540-27213-5_5}}, year = {{2005}}, } @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{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}}, } @article{4300, abstract = {{The occurrence of non-Lorentzian lineshapes is analyzed for a variety of nanooptical semiconductor systems such as quantum wells and quantum dots. Their origin is traced back to light–matter interaction (light propagation) and many-particle correlations (electron–electron and electron– phonon interaction).}}, author = {{Förstner, Jens and Ahn, K.J. and Danckwerts, J. and Schaarschmidt, M. and Waldmüller, I. and Weber, C. and Knorr, A.}}, issn = {{0370-1972}}, journal = {{physica status solidi (b)}}, keywords = {{tet_topic_polariton}}, number = {{1}}, pages = {{155--165}}, publisher = {{Wiley}}, title = {{{Light Propagation- and Many-particle-induced Non-Lorentzian Lineshapes in Semiconductor Nanooptics}}}, doi = {{10.1002/1521-3951(200211)234:1<155::aid-pssb155>3.0.co;2-r}}, volume = {{234}}, year = {{2002}}, } @article{4306, abstract = {{The coherent exciton-light coupling in pulse propagation experiments on the A-exciton resonance in bulk CdSe is investigated over a broad intensity range. At low light intensities, polariton propagation beats due to interference between excited states on both polariton branches are observed. In an intermediate intensity regime, the temporal polariton beating is suppressed in consequence of exciton-exciton interaction. At the highest light intensities, self-induced transmission and multiple pulse breakup are identified as a signature for carrier density Rabi flopping. Exciton-phonon scattering is shown to gradually eliminate coherent nonlinear propagation effects due to enhanced dephasing of the excitonic polarization. Calculations using the semiconductor Maxwell-Bloch equations are in qualitative agreement with the experimental data.}}, author = {{Nielsen, N. C. and Linden, S. and Kuhl, J. and Förstner, Jens and Knorr, A. and Koch, S. W. and Giessen, H.}}, issn = {{0163-1829}}, journal = {{Physical Review B}}, keywords = {{tet_topic_polariton}}, number = {{24}}, pages = {{245202--245202--10}}, publisher = {{American Physical Society (APS)}}, title = {{{Coherent nonlinear pulse propagation on a free-exciton resonance in a semiconductor}}}, doi = {{10.1103/physrevb.64.245202}}, volume = {{64}}, year = {{2002}}, } @article{4308, abstract = {{Features reminiscent of spectral hole burning in a homogeneous line are predicted to result from the interaction of small area pulses with the semiconductor exciton resonance. The small area pulses may be designed through pulse shaping or evolve naturally in bulk semiconductors via polaritonic effects. The spectral features exhibit signatures that are characteristic for the underlying material nonlinearity and should occur in any system with isolated spectral resonances and coherent nonlinearities.}}, author = {{Förstner, Jens and Knorr, A. and Koch, S. W.}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, keywords = {{tet_topic_polariton}}, number = {{3}}, pages = {{476--479}}, publisher = {{American Physical Society (APS)}}, title = {{{Nonlinear Pulse Propagation in Semiconductors: Hole Burning within a Homogeneous Line}}}, doi = {{10.1103/physrevlett.86.476}}, volume = {{86}}, year = {{2002}}, } @article{4310, abstract = {{Nonlinear propagation of optical pulses through an extended bulk semiconductor is investigated using the coupled semiconductor Maxwell‐Bloch equations including excitation induced correlations. For short pulse excitation around the exciton resonance, the theory describes the development of polariton beats and their suppression at increasing input pulse intensities due to the coupling of single exciton states to the Coulomb‐correlated continuum of two‐exciton states. A comparison of the theoretical results with experimental observations for CdSe bulk material is presented.}}, author = {{Förstner, Jens and Knorr, A. and Kuckenburg, S. and Meier, Torsten and Koch, S.W. and Giessen, H. and Linden, S. and Kuhl, J.}}, issn = {{0370-1972}}, journal = {{physica status solidi (b)}}, keywords = {{tet_topic_polariton}}, number = {{1}}, pages = {{453--457}}, publisher = {{Wiley}}, title = {{{Nonlinear Polariton Pulse Propagation in Bulk Semiconductors}}}, doi = {{10.1002/1521-3951(200009)221:1<453::aid-pssb453>3.0.co;2-q}}, volume = {{221}}, year = {{2002}}, }