Auflistung Fakultät für Mathematik und Physik nach Schlagwörtern (GND)

Auflistung Fakultät für Mathematik und Physik nach Schlagwörtern (GND)

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  • 0.75 atoms improve the clock signal of 10,000 atoms 
    Kruse, I.; Lange, K.; Peise, J.; Lücke, Bernd; Pezzè, L.; Arlt, Jan J.; Ertmer, Wolfgang; Lisdat, C.; Santos, Luis; Smerzi, A.; Klempt, Carsten (Bellingham, WA : S P I E - International Society for Optical Engineering, 2017)
    Since the pioneering work of Ramsey, atom interferometers are employed for precision metrology, in particular to measure time and to realize the second. In a classical interferometer, an ensemble of atoms is prepared in ...
  • Accurate propagation of ultrashort pulses in nonlinear waveguides using propagation models for the analytic signal 
    Melchert, O.; Morgner, Uwe; Roth, B.; Babushkin, I.; Demircan, A. (Bellingham, WA : SPIE - International Society for Optical Engineering, 2018)
    We present a numerical approach for the accurate simulation of the complex propagation dynamics of ultrashort optical pulses in nonlinear waveguides, especially valid for few-cycle pulses. The propagation models are derived ...
  • Advances in the surface passivation of silicon solar cells 
    Schmidt, Jan; Werner, Florian; Veith, Boris; Zielke, Dimitri; Steingrube, S.; Altermatt, Pietro P.; Gatz, Sebastian; Dullweber, Thorsten; Brendel, Rolf (Amsterdam : Elsevier BV, 2012)
    The surface passivation properties of aluminium oxide (Al 2O 3) on crystalline Si are compared with the traditional passivation system of silicon nitride (SiN x). It is shown that Al 2O 3 has fundamental advantages over ...
  • Algebraic integrability of PT-deformed Calogero models 
    Correa, Francisco; Lechtenfeld, Olaf (Bristol : IOP Publ., 2021)
    We review some recents developments of the algebraic structures and spectral properties of non-Hermitian deformations of Calogero models. The behavior of such extensions is illustrated by the A2 trigonometric and the D3 ...
  • Amplification of ultrafast pulses in an extended Mamyshev regenerator 
    Repgen, Paul; Wandt, Dieter; Morgner, Uwe; Neumann, Jörg; Kracht, Dietmar (Bellingham : SPIE, 2020)
    We present the characteristics of a high-energy ultrafast Yb-fiber laser system, based on a Mamyshev oscillator and a subsequently arranged fiber amplifier stage. The Mamyshev oscillator emits pulses at a repetition rate ...
  • Analysis and optimization of the bulk and rear recombination of screen-printed PERC solar cells 
    Gatz, Sebastian; Müller, Jens; Dullweber, Thorsten; Brendel, Rolf (Amsterdam : Elsevier BV, 2012)
    In this paper, we investigate the impact of the rear surface passivation, the silicon base material and the local aluminum contacts applied to rear side passivated solar cells with a homogenously doped emitter at the front. ...
  • Analysis of local Al-doped back surface fields for high efficiency screen-printed solar cells 
    Gatz, Sebastian; Bothe, Karsten; Müller, Jens; Dullweber, Thorsten; Brendel, Rolf (Amsterdam : Elsevier BV, 2011)
    In this paper, we investigate the surface recombination of local screen-printed aluminum contacts applied to rear passivated solar cells. We measure the surface recombination velocity by microwave-detected photoconductance ...
  • Anisotropy of Zeeman-splitting in quantum dots 
    Könemann, J.; Fal'ko, V.I.; Maude, D.K.; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2005)
    By single-electron tunneling spectroscopy we investigate the difference in spin splitting of single-electron resonances in a double-barrier structure subjected to a magnetic field perpendicular (Δ⊥) and parallel (Δ∥) to ...
  • Application of a new ray tracing framework to the analysis of extended regions in Si solar cell modules 
    Holst, Hendrik; Winter, Matthias; Vogt, Malte R.; Bothe, Karsten; Köntges, Marc; Brendel, Rolf; Altermatt, Pietro P. (Amsterdam : Elsevier, 2013)
    While ray tracing of solar cells was established decades ago, ray tracing of entire modules has met obstacles, mainly because module optics are affected by geometric structures varying over a large scale of dimensions. In ...
  • Application of Born series for modeling of Mie-resonant nanostructures 
    Ustimenko, N.; Kornovan, D.; Baryshnikova, K.V.; Evlyukhin, A.B.; Petrov, M. (Bristol : IOP Publ., 2021)
    Born series formalism is a widely-used approach to solve a scattering problem in quantum mechanics and optics, including a problem of electromagnetic scattering on the ensembles of Mie-resonant nanoparticles. In the latter ...
  • Applying the variational principle to (1+1) dimensional relativistic quantum field theories 
    Haegeman, Jutho; Cirac, J. Ignacio; Osborne, Tobias J.; Verschelde, Henri; Verstraete, Frank (Trieste : International School for Advanced Studies, 2010)
    We extend the recently introduced continuous matrix product state (cMPS) variational class to the setting of (1+1)-dimensional relativistic quantum field theories. This allows one to overcome the difficulties highlighted ...
  • Approaches toward optimized laser-induced damage thresholds of dispersive compensating mirrors applying nanolaminates 
    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 ...
  • Assembly cell for the manufacturing of flexible solar modules in building integrated photovoltaics 
    Blankemeyer, Sebastian; Schulte-Huxel, Henning; Wirtz, Wiebke; Raatz, Annika (Amsterdam [u.a.] : Elsevier, 2024)
    The current use of photovoltaics is often limited to the utilization of roof surfaces or ground-mounted systems. In particular, building integrated photovoltaics (BIPV) have enormous potential to make energy production ...
  • Assessing the Device-performance Impacts of Structural Defects with TCAD Modeling 
    Needleman, David Berney; Wagner, Hannes; Altermatt, Pietro P.; Buonassisi, Tonio (Amsterdam : Elsevier, 2015)
    Advanced solar cell architectures like passivated emitter and rear (PERC) and heterojunction with intrinsic thin layer (HIT) are increasingly sensitive to bulk recombination. Present device models consider homogeneous bulk ...
  • A brief comparison of optical pathlength difference and various definitions for the interferometric phase 
    Wanner, Gudrun; Schuster, Sönke; Tröbs, Michael; Heinzel, Gerhard (Bristol : IOP Publishing Ltd., 2015)
    To this paper we discuss that the phase readout in low noise laser interferometers can significantly deviate from the underlying optical pathlength difference (OPD). The cross coupling of beam tilt to the interferometric ...
  • Building blocks for future detectors: Silicon test masses and 1550 nm laser light 
    Schnabel, Roman; Britzger, M.; Brückner, F.; Burmeister, O.; Danzmann, Karsten; Dück, J.; Eberle, Tobias; Friedrich, Daniel; Lück, Harald; Mehmet, Moritz; Nawrodt, Ronny; Steinlechner, S.; Willke, Benno (Bristol : IOP Publishing Ltd., 2010)
    Current interferometric gravitational wave detectors use the combination of quasi-monochromatic, continuous-wave laser light at 1064 nm and fused silica test masses at room temperature. Detectors of the third generation, ...
  • Calibrating LISA Pathfinder raw data into femto-g differential accelerometry 
    Vetrugno, D.; Karnesis, N. (Bristol : Institute of Physics Publishing, 2017)
    LISA Pathfinder is an in-flight test of the local sources of acceleration noise in LISA. The acceleration noise level in LISA Pathfinder is measured by the residual differential acceleration Δg between the two test masses ...
  • Calibration accuracy of laser calorimetry for common crystal geometries 
    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 ...
  • Calogero, spherically reduced and PT-deformed 
    Correa, Francisco; Lechtenfeld, Olaf (Trieste : Scuola Internazionale Superiore di Studi Avanzati (S I S S A), 2016)
    The rational Calogero model based on the An- 1 root system is spherically reduced to a superintegrable angular model of a particle moving on Sn- 2 subject to a very particular potential singular at the Weyl chamber walls. ...
  • A combined Statistical and TCAD Model as a method for understanding and reducing variations in multicrystalline Si solar cell production 
    Fischer, G.; Müller, M.; Wagner, Hannes; Steingrube, S.; Altermatt, Pietro P. (Amsterdam : Elsevier BV, 2012)
    Monitoring the I-V parameters in mass production yields a distribution that cannot be understood in a simple manner. For example, if Voc varies greatly, it is not obvious whether this is mainly due to variations in the ...

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