Browsing by Subject "Optical materials"

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  • Greschner, Sebastian; Santos, Luis (College Park, MD : American Physical Society, 2015)
    Raman-assisted hopping may be used to realize the anyon Hubbard model in one-dimensional optical lattices. We propose a feasible scenario that significantly improves the proposal of T. Keilmann et al. [Nat. Commun. 2, 361 ...
  • Willemsen, T.; Brinkmann, M.; Jupé, M.; Gyamfi, M.; Schlichting, S.; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2017)
    Ultra-short laser applications require high quality dielectric optics. The natural dispersion of light needs to be matched by dielectric components. However such dispersive components are very challenging for the deposition ...
  • Willer, Yannick; Hao, Liu; Balasa, Istvan; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2017)
    An established method for precise determination of optical absorption is the so called laser calorimetry. According to ISO 115511 laser calorimetry is preferred to other photothermal test methods, because of its capability ...
  • Mishra, Tapan; Greschner, Sebastian; Santos, Luis (Bristol : Institute of Physics Publishing, 2016)
    A density-dependent gauge field may induce density-induced geometric frustration, leading to a non-trivial interplay between density modulation and frustration, which we illustrate for the particular case of ultra-cold ...
  • Kaczmarczyk, J.; Weimer, Hendrik; Lemeshko, Mikhail (Bristol : Institute of Physics Publishing, 2016)
    The Fermi-Hubbard model is one of the key models of condensed matter physics, which holds a potential for explaining the mystery of high-temperature superconductivity. Recent progress in ultracold atoms in optical lattices ...
  • Willemsen, Thomas; Geerke, P.; Jupé, Marco; Gallais, L.; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2016)
    The scientific background in the field of the laser induced damage processes in optical coatings has been significantly extended during the last decades. Especially for the ultra-short pulse regime a clear correlation ...
  • Guéna, J.; Weyers, S.; Abgrall, M.; Grebing, C.; Gerginov, V.; Rosenbusch, P.; Bize, Sebastien; Lipphardt, B.; Denker, H.; Quintin, N.; Raupach, S.M.F.; Nicolodi, D.; Stefani, F.; Chiodo, N.; Koke, S.; Kuhl, A.; Wiotte, F.; Meynadier, F.; Camisard, E.; Chardonnet, C.; Le Coq, Y.; Lours, M.; Santarelli, G.; Amy-Klein, A.; Le Targat, R.; Lopez, O.; Pottie, P.-E.; Grosche, G. (Bristol : Institute of Physics Publishing, 2017)
    We report on the first comparison of distant caesium fountain primary frequency standards (PFSs) via an optical fiber link. The 1415 km long optical link connects two PFSs at LNESYRTE (Laboratoire National de métrologie ...
  • Willemsen, Thomas; Schlichting, S.; Gyamfi, M.; Jupé, Marco; Ehlers, H.; Morgner, Uwe; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2016)
    The present contribution is addressed to an improved method to fabricate dielectric dispersive compensating mirrors (CMs) with an increased laser induced damage threshold (LIDT) by the use of ternary composite layers. ...
  • Steinecke, M.; Jupé, M.; Kiedrowski, K.; Ristau, D. (Bellingham, WA : S P I E - International Society for Optical Engineering, 2017)
    Based on the z-scan method, an interferometric set-up for measuring the optical Kerr-effect was engineered and optimized. Utilizing a Mach-Zehnder configuration, the wave front deformation caused by the Kerr induced ...
  • Greschner, Sebastian; Santos, Luis; Vekua, T. (College Park, MD : American Physical Society, 2013)
    Ultracold bosons in zig-zag optical lattices present a rich physics due to the interplay between frustration induced by lattice geometry, two-body interactions, and a three-body constraint. Unconstrained bosons may develop ...
  • Jürgens, P.; Jupé, M.; Gyamfi, M.; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2016)
    The modeling of the laser-induced damage processes can be divided into thermal and electronic processes. Especially, electronic damage seems to be well understood. In corresponding models, the damage threshold is linked ...
  • Gempel, M.W.; Hartmann, T.; Schulze, Torben A.; Voges, K.K.; Zenesini, Alessandro; Ospelkaus, Silke (Bristol : Institute of Physics Publishing, 2016)
    In this paper, we present an electrode geometry for the manipulation of ultracold, rovibrational ground state NaK molecules. The electrode system allows to induce a dipole moment in trapped diatomic NaK molecules with a ...