@article{4365, author = {{Belobo, D. Belobo and Meier, Torsten}}, issn = {{2045-2322}}, journal = {{Scientific Reports}}, number = {{1}}, publisher = {{Springer Nature}}, title = {{{Exotic complexes in one-dimensional Bose-Einstein condensates with spin-orbit coupling}}}, doi = {{10.1038/s41598-018-22008-2}}, volume = {{8}}, year = {{2018}}, } @article{4343, author = {{Li, Guixin and Sartorello, Giovanni and Chen, Shumei and Nicholls, Luke H. and Li, King Fai and Zentgraf, Thomas and Zhang, Shuang and Zayats, Anatoly V.}}, issn = {{1863-8880}}, journal = {{Laser & Photonics Reviews}}, number = {{6}}, publisher = {{Wiley}}, title = {{{Spin and Geometric Phase Control Four-Wave Mixing from Metasurfaces}}}, doi = {{10.1002/lpor.201800034}}, volume = {{12}}, year = {{2018}}, } @article{4357, author = {{Chen, Shumei and Li, Guixin and Cheah, Kok Wai and Zentgraf, Thomas and Zhang, Shuang}}, issn = {{2192-8614}}, journal = {{Nanophotonics}}, number = {{6}}, pages = {{1013--1024}}, publisher = {{Walter de Gruyter GmbH}}, title = {{{Controlling the phase of optical nonlinearity with plasmonic metasurfaces}}}, doi = {{10.1515/nanoph-2018-0011}}, volume = {{7}}, year = {{2018}}, } @article{1197, author = {{Schlickriede, Christian and Waterman, Naomi and Reineke, Bernhard and Georgi, Philip and Li, Guixin and Zhang, Shuang and Zentgraf, Thomas}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, number = {{8}}, publisher = {{Wiley-Blackwell}}, title = {{{Imaging through Nonlinear Metalens Using Second Harmonic Generation}}}, doi = {{10.1002/adma.201703843}}, volume = {{30}}, year = {{2018}}, } @article{3433, abstract = {{In this article we demonstrate a fully CMOS compatible fabrication process for the realization of microdisk resonators based on silicon oxynitride. The layer fabrication using plasma enhanced chemical vapor deposition is optimized in terms of surface roughness and internal material absorption. Resulting surface roughness due to the etching process is reduced by using optimized etching parameters. Whispering gallery modes of the fabricated microdisk resonators have been investigated by tapered fiber coupling and show quality factors as high as 10 6.}}, author = {{Hett, T. and Krämmer, S. and Hilleringmann, U. and Kalt, H. and Zrenner, Artur}}, issn = {{0022-2313}}, journal = {{JOURNAL OF LUMINESCENCE}}, pages = {{131----134}}, title = {{{High-Q whispering gallery microdisk resonators based on silicon oxynitride}}}, doi = {{10.1016/j.jlumin.2016.11.016}}, year = {{2017}}, } @article{9514, author = {{Huang, Lingling and Song, Xu and Reineke, Bernhard and Li, Tianyou and Li, Xiaowei and Liu, Juan and Zhang, Shuang and Wang, Yongtian and Zentgraf, Thomas}}, issn = {{2330-4022}}, journal = {{ACS Photonics}}, pages = {{338--346}}, title = {{{Volumetric Generation of Optical Vortices with Metasurfaces}}}, doi = {{10.1021/acsphotonics.6b00808}}, year = {{2017}}, } @article{7020, author = {{Ritzmann, Julian and Schott, Rüdiger and Gross, Katherine and Reuter, Dirk and Ludwig, Arne and Wieck, Andreas D.}}, issn = {{0022-0248}}, journal = {{Journal of Crystal Growth}}, pages = {{7--10}}, publisher = {{Elsevier BV}}, title = {{{Overcoming Ehrlich-Schwöbel barrier in (1 1 1)A GaAs molecular beam epitaxy}}}, doi = {{10.1016/j.jcrysgro.2017.10.029}}, volume = {{481}}, year = {{2017}}, } @article{7026, author = {{Zolatanosha, Viktoryia and Reuter, Dirk}}, issn = {{0167-9317}}, journal = {{Microelectronic Engineering}}, pages = {{35--39}}, publisher = {{Elsevier BV}}, title = {{{Robust Si 3 N 4 masks for 100 nm selective area epitaxy of GaAs-based nanostructures}}}, doi = {{10.1016/j.mee.2017.05.053}}, volume = {{180}}, year = {{2017}}, } @article{7027, author = {{Scholz, Sven and Schott, Rüdiger and Labud, Patrick A. and Somsen, Christoph and Reuter, Dirk and Ludwig, Arne and Wieck, Andreas D.}}, issn = {{0022-0248}}, journal = {{Journal of Crystal Growth}}, pages = {{46--50}}, publisher = {{Elsevier BV}}, title = {{{Focused ion beam supported growth of monocrystalline wurtzite InAs nanowires grown by molecular beam epitaxy}}}, doi = {{10.1016/j.jcrysgro.2017.04.013}}, volume = {{470}}, year = {{2017}}, } @article{7028, author = {{Kuznetsova, M. S. and Cherbunin, R. V. and Gerlovin, I. Ya. and Ignatiev, I. V. and Verbin, S. Yu. and Yakovlev, D. R. and Reuter, Dirk and Wieck, A. D. and Bayer, M.}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{15}}, publisher = {{American Physical Society (APS)}}, title = {{{Spin dynamics of quadrupole nuclei in InGaAs quantum dots}}}, doi = {{10.1103/physrevb.95.155312}}, volume = {{95}}, year = {{2017}}, } @article{7029, author = {{Srinivasan, A. and Miserev, D. S. and Hudson, K. L. and Klochan, O. and Muraki, K. and Hirayama, Y. and Reuter, Dirk and Wieck, A. D. and Sushkov, O. P. and Hamilton, A. R.}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, number = {{14}}, publisher = {{American Physical Society (APS)}}, title = {{{Detection and Control of Spin-Orbit Interactions in a GaAs Hole Quantum Point Contact}}}, doi = {{10.1103/physrevlett.118.146801}}, volume = {{118}}, year = {{2017}}, } @inproceedings{3988, author = {{Riedl, Thomas and Kunnathully, Vinay and Karlisch, A. and Reuter, Dirk and Weber, N. and Meier, Cedrik and Schierholz, R. and Lindner, Jörg}}, location = {{Straßburg (France)}}, title = {{{Morphology, structure and enhanced PL of molecular beam epitaxial In0.2Ga0.8As layers on nanopillar patterned GaAs}}}, year = {{2017}}, } @article{4359, author = {{Prajongtat, Pongthep and Sriyab, Suwannee and Zentgraf, Thomas and Hannongbua, Supa}}, issn = {{0026-8976}}, journal = {{Molecular Physics}}, number = {{1}}, pages = {{9--18}}, publisher = {{Informa UK Limited}}, title = {{{Optimisation of stability and charge transferability of ferrocene-encapsulated carbon nanotubes}}}, doi = {{10.1080/00268976.2017.1359348}}, volume = {{116}}, year = {{2017}}, } @article{6540, abstract = {{Coherent phonons can greatly vary light–matter interaction in semiconductor nanostructures placed inside an optical resonator on a picosecond time scale. For an ensemble of quantum dots (QDs) as active laser medium, phonons are able to induce a large enhancement or attenuation of the emission intensity, as has been recently demonstrated. The physics of this coupled phonon–exciton–light system consists of various effects, which in the experiment typically cannot be clearly separated, in particular, due to the complicated sample structure a rather complex strain pulse impinges on the QD ensemble. Here we present a comprehensive theoretical study how the laser emission is affected by phonon pulses of various shapes as well as by ensembles with different spectral distributions of the QDs. This gives insight into the fundamental interaction dynamics of the coupled phonon–exciton–light system, while it allows us to clearly discriminate between two prominent effects: the adiabatic shifting of the ensemble and the shaking effect. This paves the way to a tailored laser emission controlled by phonons.}}, author = {{Wigger, Daniel and Czerniuk, Thomas and Reiter, Doris E and Bayer, Manfred and Kuhn, Tilmann}}, issn = {{1367-2630}}, journal = {{New Journal of Physics}}, number = {{7}}, publisher = {{IOP Publishing}}, title = {{{Systematic study of the influence of coherent phonon wave packets on the lasing properties of a quantum dot ensemble}}}, doi = {{10.1088/1367-2630/aa78bf}}, volume = {{19}}, year = {{2017}}, } @article{6541, abstract = {{We report on the coherent optical response from an ensemble of (In,Ga)As quantum dots (QDs) embedded in a planar Tamm-plasmon microcavity with a quality factor of approximately 100. Significant enhancement of the light-matter interaction is demonstrated under selective laser excitation of those quantum dots which are in resonance with the cavity mode. The enhancement is manifested through Rabi oscillations of the photon echo, demonstrating coherent control of excitons with picosecond pulses at intensity levels more than an order of magnitude smaller as compared with bare quantum dots. The decay of the photon echo transients is weakly changed by the resonator, indicating a small decrease of the coherence time T2 which we attribute to the interaction with the electron plasma in the metal layer located close (40 nm) to the QD layer. Simultaneously we see a reduction of the population lifetime T1, inferred from the stimulated photon echo, due to an enhancement of the spontaneous emission by a factor of 2, which is attributed to the Purcell effect, while nonradiative processes are negligible, as confirmed from time-resolved photoluminescence.}}, author = {{Salewski, M. and Poltavtsev, S. V. and Kapitonov, Yu. V. and Vondran, J. and Yakovlev, D. R. and Schneider, C. and Kamp, M. and Höfling, S. and Oulton, R. and Akimov, I. A. and Kavokin, A. V. and Bayer, M.}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{3}}, publisher = {{American Physical Society (APS)}}, title = {{{Photon echoes from (In,Ga)As quantum dots embedded in a Tamm-plasmon microcavity}}}, doi = {{10.1103/physrevb.95.035312}}, volume = {{95}}, year = {{2017}}, } @article{6542, abstract = {{Transient changes of the optical response of WS2 monolayers are studied by femtosecond broadband pump–probe spectroscopy. Time-dependent absorption spectra are analyzed by tracking the line width broadening, bleaching, and energy shift of the main exciton resonance as a function of time delay after the excitation. Two main sources for the pump-induced changes of the optical response are identified. Specifically, we find an interplay between modifications induced by many-body interactions from photoexcited carriers and by the subsequent transfer of the excitation to the phonon system followed by cooling of the material through the heat transfer to the substrate.}}, author = {{Ruppert, Claudia and Chernikov, Alexey and Hill, Heather M. and Rigosi, Albert F. and Heinz, Tony F.}}, issn = {{1530-6984}}, journal = {{Nano Letters}}, keywords = {{Atomically thin 2D materials, carrier and phonon dynamics, ultrafast spectroscopy}}, number = {{2}}, pages = {{644--651}}, publisher = {{American Chemical Society (ACS)}}, title = {{{The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation}}}, doi = {{10.1021/acs.nanolett.6b03513}}, volume = {{17}}, year = {{2017}}, } @article{6543, abstract = {{Up to 400 mW of near-IR (1370-1500 nm) femtosecond pulses are generated from an optical parametric amplifier directly driven by a Yb:fiber oscillator delivering 100\&\#x00A0;fs pulses at 1036 nm. The process is seeded by a stable supercontinuum obtained from a photonic crystal fiber. We use a single pass through a 3 mm, magnesium oxide-doped, periodically poled LiNbO3 downconversion crystal to produce a near-IR pulse train with a remarkable power stability of 1.4 % (RMS) during one hour. Tuning is achieved by the temperature and the poling period of the nonlinear crystal.}}, author = {{Mundry, J. and Lohrenz, J. and Betz, M.}}, journal = {{Applied Optics}}, keywords = {{Infrared and far-infrared lasers, Ultrafast lasers, Nonlinear optics, parametric processes, Parametric oscillators and amplifiers, Femtosecond pulses, Fiber lasers, Fused silica, Laser systems, Photonic crystal fibers, Pulse propagation}}, number = {{11}}, pages = {{3104--3108}}, publisher = {{OSA}}, title = {{{Tunable femtosecond near-IR source by pumping an OPA directly with a 90 MHz Yb:fiber source}}}, doi = {{10.1364/AO.56.003104}}, volume = {{56}}, year = {{2017}}, } @article{6544, abstract = {{A picosecond acoustic pulse can be used to control the lasing emission from semiconductor nanostructures by shifting their electronic transitions. When the active medium, here an ensemble of (In,Ga)As quantum dots, is shifted into or out of resonance with the cavity mode, a large enhancement or suppression of the lasing emission can dynamically be achieved. Most interesting, even in the case when gain medium and cavity mode are in resonance, we observe an enhancement of the lasing due to shaking by coherent phonons. In order to understand the interactions of the nonlinearly coupled photon-exciton-phonon subsystems, we develop a semiclassical model and find an excellent agreement between theory and experiment.}}, author = {{Czerniuk, T. and Wigger, D. and Akimov, A. V. and Schneider, C. and Kamp, M. and Höfling, S. and Yakovlev, D. R. and Kuhn, T. and Reiter, D. E. and Bayer, M.}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, number = {{13}}, publisher = {{American Physical Society (APS)}}, title = {{{Picosecond Control of Quantum Dot Laser Emission by Coherent Phonons}}}, doi = {{10.1103/physrevlett.118.133901}}, volume = {{118}}, year = {{2017}}, } @article{6545, abstract = {{We develop a nanoscopy method with in-depth resolution for layered photonic devices. Photonics often requires tailored light field distributions for the optical modes used, and an exact knowledge of the geometry of a device is crucial to assess its performance. The presented acousto-optical nanoscopy method is based on the uniqueness of the light field distributions in photonic devices: for a given wavelength, we record the reflectivity modulation during the transit of a picosecond acoustic pulse. The temporal profile obtained can be linked to the internal light field distribution. From this information, a reverse-engineering procedure allows us to reconstruct the light field and the underlying photonic structure very precisely. We apply this method to the slow light mode of an AlAs/GaAs micropillar resonator and show its validity for the tailored experimental conditions.}}, author = {{Czerniuk, T. and Schneider, C. and Kamp, M. and Höfling, S. and Glavin, B. A. and Yakovlev, D. R. and Akimov, A. V. and Bayer, M.}}, issn = {{2334-2536}}, journal = {{Optica}}, number = {{6}}, publisher = {{The Optical Society}}, title = {{{Acousto-optical nanoscopy of buried photonic nanostructures}}}, doi = {{10.1364/optica.4.000588}}, volume = {{4}}, year = {{2017}}, } @article{682, author = {{Weber, Nils and Protte, Maximilian and Walter, Felicitas and Georgi, Philip and Zentgraf, Thomas and Meier, Cedrik}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{20}}, publisher = {{American Physical Society (APS)}}, title = {{{Double resonant plasmonic nanoantennas for efficient second harmonic generation in zinc oxide}}}, doi = {{10.1103/physrevb.95.205307}}, volume = {{95}}, year = {{2017}}, }