TY - JOUR AU - Allgaier, Markus AU - Ansari, Vahid AU - Eigner, Christof AU - Quiring, Viktor AU - Ricken, Raimund AU - Donohue, John Matthew AU - Czerniuk, Thomas AU - Aßmann, Marc AU - Bayer, Manfred AU - Brecht, Benjamin AU - Silberhorn, Christine ID - 21029 JF - Applied Physics Letters SN - 0003-6951 TI - Streak camera imaging of single photons at telecom wavelength VL - 112 ER - TY - JOUR AU - Liu, Ning AU - Steinrück, Hans-Georg AU - Osvet, Andres AU - Yang, Yuyun AU - Schmuki, Patrik ID - 23630 JF - Applied Physics Letters SN - 0003-6951 TI - Noble metal free photocatalytic H2 generation on black TiO2: On the influence of crystal facets vs. crystal damage VL - 110 ER - TY - JOUR AU - Lafont, O. AU - Luk, S. M. H. AU - Lewandowski, P. AU - Kwong, N. H. AU - Leung, P. T. AU - Galopin, E. AU - Lemaitre, A. AU - Tignon, J. AU - Schumacher, Stefan AU - Baudin, E. AU - Binder, R. ID - 13361 JF - Applied Physics Letters SN - 0003-6951 TI - Controlling the optical spin Hall effect with light ER - TY - JOUR AU - Layes, V. AU - Monje, S. AU - Corbella, C. AU - Trieschmann, J. AU - de los Arcos de Pedro, Maria Teresa AU - von Keudell, A. ID - 22568 JF - Applied Physics Letters SN - 0003-6951 TI - Species transport on the target during high power impulse magnetron sputtering ER - TY - JOUR AU - Atorf, B. AU - Rasouli, H. AU - Nordendorf, G. AU - Wilkes, D. AU - Kitzerow, Heinz-Siegfried ID - 39674 IS - 8 JF - Applied Physics Letters KW - Physics and Astronomy (miscellaneous) SN - 0003-6951 TI - Near infrared Kerr effect and description of field-induced phase transitions in polymer-stabilized blue phase liquid crystals VL - 108 ER - TY - JOUR AB - We report the fabrication of periodically poled domain patterns in x-cut lithium niobate thin-film. Here, thin films on insulator have drawn particular attention due to their intrinsic waveguiding properties offering high mode confinement and smaller devices compared to in-diffused waveguides in bulk material. In contrast to z-cut thin film lithium niobate, the x-cut geometry does not require back electrodes for poling. Further, the x-cut geometry grants direct access to the largest nonlinear and electro-optical tensor element, which overall promises smaller devices. The domain inversion was realized via electric field poling utilizing deposited aluminum top electrodes on a stack of LN thin film/SiO2 layer/Bulk LN, which were patterned by optical lithography. The periodic domain inversion was verified by non-invasive confocal second harmonic microscopy. Our results show domain patterns in accordance to the electrode mask layout. The second harmonic signatures can be interpreted in terms of spatially, overlapping domain filaments which start their growth on the þz side. AU - Mackwitz, P. AU - Rüsing, Michael AU - Berth, Gerhard AU - Widhalm, A. AU - Müller, K. AU - Zrenner, Artur ID - 4237 IS - 15 JF - Applied Physics Letters SN - 0003-6951 TI - Periodic domain inversion in x-cut single-crystal lithium niobate thin film VL - 108 ER - TY - JOUR AU - Jostmeier, Thorben AU - Wecker, Tobias AU - Reuter, Dirk AU - As, Donat Josef AU - Betz, Markus ID - 7217 IS - 21 JF - Applied Physics Letters SN - 0003-6951 TI - Ultrafast carrier dynamics and resonant inter-miniband nonlinearity of a cubic GaN/AlN superlattice VL - 107 ER - TY - JOUR AU - Chen, J. C. H. AU - Klochan, O. AU - Micolich, A. P. AU - Das Gupta, K. AU - Sfigakis, F. AU - Ritchie, D. A. AU - Trunov, K. AU - Reuter, Dirk AU - Wieck, A. D. AU - Hamilton, A. R. ID - 7221 IS - 18 JF - Applied Physics Letters SN - 0003-6951 TI - Fabrication and characterisation of gallium arsenide ambipolar quantum point contacts VL - 106 ER - TY - JOUR AB - We report about the fabrication and analysis of high Q photonic crystal cavities with metallic Schottky-contacts. The structures are based on GaAs n-i membranes with an InGaAs quantum well in the i-region and nanostructured low ohmic metal top-gates. They are designed for photocurrent readout within the cavity and fast electric manipulations. The cavity structures are characterized by photoluminescence and photocurrent spectroscopy under resonant excitation. We find strong cavity resonances in the photocurrent spectra and surprisingly high Q-factors up to 6500. Temperature dependent photocurrent measurements in the region between 4.5K and 310K show an exponential enhancement of the photocurrent signal and an external quantum efficiency up to 0.26. AU - Quiring, W. AU - Al-Hmoud, M. AU - Rai, A. AU - Reuter, Dirk AU - Wieck, A. D. AU - Zrenner, Artur ID - 4331 IS - 4 JF - Applied Physics Letters SN - 0003-6951 TI - Photonic crystal cavities with metallic Schottky contacts VL - 107 ER - TY - JOUR AB - We use a picosecond acoustics technique to modulate the laser output of electrically pumped GaAs/AlAs micropillar lasers with InGaAs quantum dots. The modulation of the emission wavelength takes place on the frequencies of the nanomechanical extensional and breathing (radial) modes of the micropillars. The amplitude of the modulation for various nanomechanical modes is different for every micropillar which is explained by a various elastic contact between the micropillar walls and polymer environment. AU - Czerniuk, T. AU - Tepper, J. AU - Akimov, A. V. AU - Unsleber, S. AU - Schneider, C. AU - Kamp, M. AU - Höfling, S. AU - Yakovlev, D. R. AU - Bayer, M. ID - 6524 IS - 4 JF - Applied Physics Letters SN - 0003-6951 TI - Impact of nanomechanical resonances on lasing from electrically pumped quantum dot micropillars VL - 106 ER - TY - JOUR AU - Wahle, Markus AU - Kitzerow, Heinz-Siegfried ID - 39689 IS - 20 JF - Applied Physics Letters KW - Physics and Astronomy (miscellaneous) SN - 0003-6951 TI - Electrically tunable zero dispersion wavelengths in photonic crystal fibers filled with a dual frequency addressable liquid crystal VL - 107 ER - TY - JOUR AU - Repp, J. AU - Schinner, G. J. AU - Schubert, E. AU - Rai, A. K. AU - Reuter, Dirk AU - Wieck, A. D. AU - Wurstbauer, U. AU - Kotthaus, J. P. AU - Holleitner, A. W. ID - 7224 IS - 24 JF - Applied Physics Letters SN - 0003-6951 TI - Confocal shift interferometry of coherent emission from trapped dipolar excitons VL - 105 ER - TY - JOUR AU - Buß, J. H. AU - Rudolph, J. AU - Shvarkov, S. AU - Semond, F. AU - Reuter, Dirk AU - Wieck, A. D. AU - Hägele, D. ID - 7259 IS - 9 JF - Applied Physics Letters SN - 0003-6951 TI - Magneto-optical studies of Gd-implanted GaN: No spin alignment of conduction band electrons VL - 103 ER - TY - JOUR AB - Whispering gallery modes (WGMs) were observed in 60 nm thin cubic AlN microdisk resonators containing a single layer of non-polar cubic GaN quantum dots. Freestanding microdisks were patterned by means of electron beam lithography and a two step reactive ion etching process. Micro-photoluminescence spectroscopy investigations were performed for optical characterization. We analyzed the mode spacing for disk diameters ranging from 2-4 lm. Numerical investigations using three dimensional finite difference time domain calculations were in good agreement with the experimental data. Whispering gallery modes of the radial orders 1 and 2 were identified by means of simulated mode field distributions. AU - Bürger, M. AU - Ruth, M. AU - Declair, S. AU - Förstner, Jens AU - Meier, Cedrik AU - As, Donat Josef ID - 3963 IS - 8 JF - Applied Physics Letters KW - tet_topic_qd KW - tet_topic_microdisk SN - 0003-6951 TI - Whispering gallery modes in zinc-blende AlN microdisks containing non-polar GaN quantum dots VL - 102 ER - TY - JOUR AU - Vollbrecht, Joachim AU - Kasdorf, Olga AU - Quiring, Viktor AU - Suche, Hubertus AU - Bock, Harald AU - Kitzerow, Heinz-Siegfried ID - 39719 IS - 4 JF - Applied Physics Letters KW - Physics and Astronomy (miscellaneous) SN - 0003-6951 TI - Microresonator-enhanced electroluminescence of an organic light emitting diode based on a columnar liquid crystal VL - 103 ER - TY - JOUR AU - Li, Ming-Fei AU - Zhang, Yu-Ran AU - Liu, Xue-Feng AU - Yao, Xu-Ri AU - Luo, Kai Hong AU - Fan, Heng AU - Wu, Ling-An ID - 26066 JF - Applied Physics Letters SN - 0003-6951 TI - A double-threshold technique for fast time-correspondence imaging ER - TY - JOUR AU - Höpfner, Henning AU - Fritsche, Carola AU - Ludwig, Arne AU - Ludwig, Astrid AU - Stromberg, Frank AU - Wende, Heiko AU - Keune, Werner AU - Reuter, Dirk AU - Wieck, Andreas D. AU - Gerhardt, Nils C. AU - Hofmann, Martin R. ID - 7301 IS - 11 JF - Applied Physics Letters SN - 0003-6951 TI - Magnetic field dependence of the spin relaxation length in spin light-emitting diodes VL - 101 ER - TY - JOUR AU - Beckel, Andreas AU - Zhou, Daming AU - Marquardt, Bastian AU - Reuter, Dirk AU - Wieck, Andreas D. AU - Geller, Martin AU - Lorke, Axel ID - 7312 IS - 23 JF - Applied Physics Letters SN - 0003-6951 TI - Momentum matching in the tunneling between 2-dimensional and 0-dimensional electron systems VL - 100 ER - TY - JOUR AU - Schwan, A. AU - Varwig, S. AU - Greilich, A. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. ID - 7313 IS - 23 JF - Applied Physics Letters SN - 0003-6951 TI - Non-resonant optical excitation of mode-locked electron spin coherence in (In,Ga)As/GaAs quantum dot ensemble VL - 100 ER - TY - JOUR AU - Huang, J. AU - Chen, Y. S. AU - Ludwig, A. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bacher, G. ID - 7327 IS - 13 JF - Applied Physics Letters SN - 0003-6951 TI - Electron-nuclei spin coupling in GaAs—Free versus localized electrons VL - 100 ER -