@article{12919,
  author       = {{Georgi, Philip and Massaro, Marcello and Luo, Kai Hong and Sain, Basudeb and Montaut, Nicola and Herrmann, Harald and Weiss, Thomas and Li, Guixin and Silberhorn, Christine and Zentgraf, Thomas}},
  issn         = {{2047-7538}},
  journal      = {{Light: Science & Applications}},
  pages        = {{70}},
  title        = {{{Metasurface interferometry toward quantum sensors}}},
  doi          = {{10.1038/s41377-019-0182-6}},
  volume       = {{8}},
  year         = {{2019}},
}

@article{12930,
  author       = {{Köthemann, Ronja and Weber, Nils and Lindner, Jörg K N and Meier, Cedrik}},
  issn         = {{0268-1242}},
  journal      = {{Semiconductor Science and Technology}},
  number       = {{9}},
  title        = {{{High-precision determination of silicon nanocrystals: optical spectroscopy versus electron microscopy}}},
  doi          = {{10.1088/1361-6641/ab3536}},
  volume       = {{34}},
  year         = {{2019}},
}

@article{14870,
  author       = {{Wei, Qunshuo and Sain, Basudeb and Wang, Yongtian and Reineke, Bernhard and Li, Xiaowei and Huang, Lingling and Zentgraf, Thomas}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  number       = {{12}},
  pages        = {{8964–8971}},
  title        = {{{Simultaneous Spectral and Spatial Modulation for Color Printing and Holography Using All-dielectric Metasurfaces}}},
  doi          = {{10.1021/acs.nanolett.9b03957}},
  volume       = {{19}},
  year         = {{2019}},
}

@article{14990,
  abstract     = {{We investigate optical microresonators consisting of either one or two coupled rectangular strips between upper and lower slab waveguides. The cavities are evanescently excited under oblique angles by thin-film guided, in-plane unguided waves supported by one of the slab waveguides. Beyond a specific incidence angle, losses are fully suppressed. The interaction between the guided mode of the cavity-strip and the incoming slab modes leads to resonant behavior for specific incidence angles and gaps. For a single cavity, at resonance, the input power is equally split among each of the four output ports, while for two cavities an add-drop filter can be realized that, at resonance, routes the incoming power completely to the forward drop waveguide via the cavity. For both applications, the strength of the interaction is controlled by the gaps between cavities and waveguides.}},
  author       = {{Ebers, Lena and Hammer, Manfred and Berkemeier, Manuel B. and Menzel, Alexander and Förstner, Jens}},
  issn         = {{2578-7519}},
  journal      = {{OSA Continuum}},
  keywords     = {{tet_topic_waveguides}},
  pages        = {{3288}},
  title        = {{{Coupled microstrip-cavities under oblique incidence of semi-guided waves: a lossless integrated optical add-drop filter}}},
  doi          = {{10.1364/osac.2.003288}},
  volume       = {{2}},
  year         = {{2019}},
}

@article{13965,
  author       = {{Buß, J. H. and Schupp, T. and As, Donat Josef and Hägele, D. and Rudolph, J.}},
  issn         = {{0021-8979}},
  journal      = {{Journal of Applied Physics}},
  title        = {{{Optical excitation density dependence of spin dynamics in bulk cubic GaN}}},
  doi          = {{10.1063/1.5123914}},
  year         = {{2019}},
}

@article{13966,
  author       = {{Baron, Elias and Goldhahn, Rüdiger and Deppe, Michael and As, Donat Josef and Feneberg, Martin}},
  issn         = {{2475-9953}},
  journal      = {{Physical Review Materials}},
  title        = {{{Influence of the free-electron concentration on the optical properties of zincblende GaN up to 1×1020cm−3}}},
  doi          = {{10.1103/physrevmaterials.3.104603}},
  year         = {{2019}},
}

@article{10282,
  author       = {{Lin, Zemeng and Huang, Lingling and Zhao, Ruizhe and Wei, Qunshuo and Zentgraf, Thomas and Wang, Yongtian and Li, Xiaowei}},
  issn         = {{1094-4087}},
  journal      = {{Optics Express}},
  number       = {{13}},
  pages        = {{18740--18750}},
  title        = {{{Dynamic control of mode modulation and spatial multiplexing using hybrid metasurfaces}}},
  doi          = {{10.1364/oe.27.018740}},
  volume       = {{27}},
  year         = {{2019}},
}

@article{13650,
  abstract     = {{<jats:p>Surfaces covered with layers of ultrathin nanoantenna structures—so called metasurfaces have recently been proven capable of completely controlling phase of light. Metalenses have emerged from the advance in the development of metasurfaces providing a new basis for recasting traditional lenses into thin, planar optical components capable of focusing light. The lens made of arrays of plasmonic gold nanorods were fabricated on a glass substrate by using electron beam lithography. A 1064 nm laser was used to create a high intensity circularly polarized light focal spot through metalens of focal length 800 µm, N.A. = 0.6 fabricated based on Pancharatnam-Berry phase principle. We demonstrated that optical rotation of birefringent nematic liquid crystal droplets trapped in the laser beam was possible through this metalens. The rotation of birefringent droplets convinced that the optical trap possesses strong enough angular momentum of light from radiation of each nanostructure acting like a local half waveplate and introducing an orientation-dependent phase to light. Here, we show the success in creating a miniaturized and robust metalens based optical tweezers system capable of rotating liquid crystals droplets to imitate an optical motor for future lab-on-a-chip applications.</jats:p>}},
  author       = {{Suwannasopon, Satayu and Meyer, Fabian and Schlickriede, Christian and Chaisakul, Papichaya and T-Thienprasert, Jiraroj and Limtrakul, Jumras and Zentgraf, Thomas and Chattham, Nattaporn}},
  issn         = {{2073-4352}},
  journal      = {{Crystals}},
  number       = {{10}},
  pages        = {{515}},
  title        = {{{Miniaturized Metalens Based Optical Tweezers on Liquid Crystal Droplets for Lab-on-a-Chip Optical Motors}}},
  doi          = {{10.3390/cryst9100515}},
  volume       = {{9}},
  year         = {{2019}},
}

@article{13651,
  author       = {{Chen, Shumei and Reineke, Bernhard and Li, Guixin and Zentgraf, Thomas and Zhang, Shuang}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  number       = {{9}},
  pages        = {{6278--6283}},
  title        = {{{Strong Nonlinear Optical Activity Induced by Lattice Surface Modes on Plasmonic Metasurface}}},
  doi          = {{10.1021/acs.nanolett.9b02417}},
  volume       = {{19}},
  year         = {{2019}},
}

@misc{7720,
  abstract     = {{Die Erfindung betrifft einen optischen Übergang zwischen zwei optischen Schichtwellenleitern. Dazu ist eine Anordnung vorgesehen aus einem ersten optischen Schichtwellenleiter (2) und einem zweiten optischen Schichtwellenleiter (3), wobei der erste optische Schichtwellenleiter (2) und der zweite optische Schichtwellenleiter (3) voneinander verschiedene über ihre jeweilige Länge konstante Dicken (d, r) aufweisen, der erste optische Schichtwellenleiter (2) mit dem zweiten optischen Schichtwellenleiter (3) mittels einer optischen Schichtwellenleiterstruktur (4) verbunden ist, die über ihre gesamte Länge (w) eine Dicke (h) aufweist, die zwischen der Dicke (d) des ersten optischen Schichtwellenleiters (2) und der Dicke (r) des zweiten optischen Schichtwellenleiters (3) liegt. Erfindungsgemäß ist die Dicke (h) der optischen Schichtwellenleiterstruktur (4) über die gesamte Länge (w) der optischen Schichtwellenleiterstruktur (4) konstant. Damit wird eine Möglichkeit für einen effizienten und mit geringen Verlusten behafteten Übergang zwischen zwei optischen Schichtwellenleitern mit unterschiedlicher Dicke bereitgestellt. }},
  author       = {{Hammer, Manfred and Förstner, Jens and Ebers, Lena}},
  keywords     = {{tet_topic_waveguides}},
  pages        = {{9}},
  title        = {{{Optical transition between two optical waveguides layer and method for transmitting light}}},
  year         = {{2019}},
}

@article{13870,
  author       = {{Atorf, Bernhard and Auf der Landwehr, Chris Holm and Rennerich, Roman and Kitzerow, Heinz-Siegfried}},
  issn         = {{1520-6106}},
  journal      = {{The Journal of Physical Chemistry B}},
  pages        = {{1384--1389}},
  title        = {{{Midinfrared Birefringence of Liquid Crystals, Polarimetry, and Intensity Modulators}}},
  doi          = {{10.1021/acs.jpcb.8b10039}},
  year         = {{2019}},
}

@article{16112,
  author       = {{Höpker, Jan Philipp and Gerrits, Thomas and Lita, Adriana and Krapick, Stephan and Herrmann, Harald and Ricken, Raimund and Quiring, Viktor and Mirin, Richard and Nam, Sae Woo and Silberhorn, Christine and Bartley, Tim}},
  issn         = {{2378-0967}},
  journal      = {{APL Photonics}},
  title        = {{{Integrated transition edge sensors on titanium in-diffused lithium niobate waveguides}}},
  doi          = {{10.1063/1.5086276}},
  year         = {{2019}},
}

@article{15444,
  author       = {{Deppe, Michael and Henksmeier, Tobias and Gerlach, Jürgen W. and Reuter, Dirk and As, Donat J.}},
  issn         = {{0370-1972}},
  journal      = {{physica status solidi (b)}},
  title        = {{{Molecular Beam Epitaxy Growth and Characterization of Germanium‐Doped Cubic Al                          x                        Ga            1−                          x                        N}}},
  doi          = {{10.1002/pssb.201900532}},
  year         = {{2019}},
}

@misc{24792,
  author       = {{Bahmanian, Meysam and Scheytt, Christoph}},
  title        = {{{Theory of an Optoelectronic Microwave Phase-locked Loop based on a MLL reference and MZM-based Optoelectronic Phase Detection}}},
  year         = {{2019}},
}

@article{39971,
  author       = {{Kitzerow, Heinz-Siegfried}},
  issn         = {{1358-314X}},
  journal      = {{Liquid Crystals Today}},
  keywords     = {{Materials Chemistry, Inorganic Chemistry, Condensed Matter Physics}},
  number       = {{1}},
  pages        = {{23--30}},
  publisher    = {{Informa UK Limited}},
  title        = {{{Pawel Pieranski – crystallographer of liquids and Alfred-Saupe-prize laureate 2019}}},
  doi          = {{10.1080/1358314x.2019.1625161}},
  volume       = {{28}},
  year         = {{2019}},
}

@article{14544,
  author       = {{Vondran, J. and Spitzer, F. and Bayer, M. and Akimov, I. A. and Trautmann, Alexander and Reichelt, Matthias and Meier, Cedrik and Weber, N. and Meier, Torsten and André, R. and Mariette, H.}},
  issn         = {{2469-9950}},
  journal      = {{Physical Review B}},
  number       = {{15}},
  pages        = {{155308}},
  title        = {{{Spatially asymmetric transients of propagating exciton-polariton modes in a planar CdZnTe/CdMgTe guiding structure}}},
  doi          = {{10.1103/physrevb.100.155308}},
  volume       = {{100}},
  year         = {{2019}},
}

@article{10014,
  abstract     = {{The cubic, tetragonal, and orthorhombic phase of potassium niobate (KNbO3) are studied based on density-functional theory. Starting from the relaxed atomic geometries, we analyze the influence of self-energy corrections on the electronic band structure within the GW approximation. We find that quasiparticle shifts widen the direct (indirect) band gap by 1.21 (1.44), 1.58 (1.55), and 1.67 (1.64) eV for the cubic, tetragonal, and orthorhombic phase, respectively. By solving the Bethe-Salpeter equation, we obtain the linear dielectric function with excitonic and local-field effects, which turn out to be essential for good agreement with experimental data. From our results, we extract an exciton binding energy of 0.6, 0.5, and 0.5 eV for the cubic, tetragonal, and orthorhombic phase, respectively. Furthermore, we investigate the nonlinear second-harmonic generation (SHG) both theoretically and experimentally. The frequency-dependent second-order polarization tensor of orthorhombic KNbO3 is measured for incoming photon energies between 1.2 and 1.6 eV. In addition, calculations within the independent-(quasi)particle approximation are performed for the tetragonal and orthorhombic phase. The novel experimental data are in excellent agreement with the quasiparticle calculations and resolve persistent discrepancies between earlier experimental measurements and ab initio results reported in the literature.}},
  author       = {{Schmidt, Falko and Riefer, Arthur and Schmidt, Wolf Gero and Schindlmayr, Arno and Imlau, Mirco and Dobener, Florian and Mengel, Nils and Chatterjee, Sangam and Sanna, Simone}},
  issn         = {{2475-9953}},
  journal      = {{Physical Review Materials}},
  number       = {{5}},
  publisher    = {{American Physical Society}},
  title        = {{{Quasiparticle and excitonic effects in the optical response of KNbO3}}},
  doi          = {{10.1103/PhysRevMaterials.3.054401}},
  volume       = {{3}},
  year         = {{2019}},
}

@article{29746,
  author       = {{Nicholson, C. W. and Puppin, M. and Lücke, A. and Gerstmann, Uwe and Krenz, Marvin and Schmidt, Wolf Gero and Rettig, L. and Ernstorfer, R. and Wolf, M.}},
  issn         = {{2469-9950}},
  journal      = {{Physical Review B}},
  number       = {{15}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Excited-state band mapping and momentum-resolved ultrafast population dynamics in In/Si(111) nanowires investigated with XUV-based time- and angle-resolved photoemission spectroscopy}}},
  doi          = {{10.1103/physrevb.99.155107}},
  volume       = {{99}},
  year         = {{2019}},
}

@article{37288,
  abstract     = {{<jats:p>An integrated chip with quantum state generation, active polarization manipulation, and precise time control is demonstrated.</jats:p>}},
  author       = {{Luo, Kai-Hong and Brauner, Sebastian and Eigner, Christof and Sharapova, Polina and Ricken, Raimund and Meier, Torsten and Herrmann, Harald and Silberhorn, Christine}},
  issn         = {{2375-2548}},
  journal      = {{Science Advances}},
  keywords     = {{Multidisciplinary}},
  number       = {{1}},
  publisher    = {{American Association for the Advancement of Science (AAAS)}},
  title        = {{{Nonlinear integrated quantum electro-optic circuits}}},
  doi          = {{10.1126/sciadv.aat1451}},
  volume       = {{5}},
  year         = {{2019}},
}

@inproceedings{13285,
  author       = {{Hannes, Wolf-Rüdiger and Krauß-Kodytek, Laura and Ruppert, Claudia and Betz, Markus and Meier, Torsten}},
  booktitle    = {{Ultrafast Phenomena and Nanophotonics XXIII}},
  editor       = {{Betz, Markus and Elezzabi, Abdulhakem Y.}},
  isbn         = {{9781510624740}},
  title        = {{{Intensity-dependent degenerate and non-degenerate nonlinear optical absorption of direct-gap semiconductors}}},
  doi          = {{10.1117/12.2503539}},
  volume       = {{10916}},
  year         = {{2019}},
}