Ultrafast nanooptics

Theory of spatio-temporally resolved optical dynamics in hybrid-nanostructures (Richter, Schmidt)

Inhomogeneous spatio-temporal  excitation of elementary excitations can be used to study the dynamics of transport phenomena within hybrid nanostructures  and between their constituents.
In particular, we focus on the theoretical description of

  1. the femtosecond excitation transfer on a nanometer scale in metal and semiconductor-hybrid structures, as well as
  2. the internal dynamics of compound elementary excitations.


We aim at:

  1. a self-consistent description of optically induced excitation transfer in hybrid nanostructures,
  2. the manipulation of internal motion of elementary excitations by spatially localized fields, and
  3. proposals for new spatially resolved spectroscopic methods to observe information on the internal dynamics in hybrid structures.


  1. we address excitation transfer between the constituents of hybrids, examples are:
    coupled circular silver islands and semiconductor wires including carbon nanotubes, silver/gold nanoantennas coupled to quantum dots, including single quantum dots placed in an inverse bowtie structure, coupled quantum dots near a silver/gold nanostructure.
  2. we  address the question to what extent internal degrees of freedom (relative motion of a compound elementary excitation) in spatially extended structures can be manipulated by nanoscale spatial gradients of the applied optical fields.
    Typical examples are:
    electron-hole distributions in bound exciton states,
    electron/exciton-phonon clouds in polarons.
  3. On top of these microscopic material studies, coherent spatially resolved nonlinear spectroscopic signals will be applied to these systems.


Numerical solution of nonlocal hydrodynamic Drude model for arbitrary shaped nano-plasmonic structures using finite elements method
Kirankumar R. Hiremath, Lin Zschiedrich, Frank Schmidt,
arXiv:1201.1527v1 (2012)
Tunable Plasmon Coupling in Distance-Controlled Gold Nanoparticles
Holger Lange, Beatriz H. Juárez, Adrian Carl, Marten Richter, Neus G. Bastús, Horst Weller, Christian Thomsen, Regine von Klitzing, and Andreas Knorr
Langmuir DOI:10.1021/la3001575 (2012)
Combining nanooptical fields and coherent spectroscopy on systems with delocalized excitons
Felix Schlosser, Mario Schoth, Kirankumar Hiremath, Sven Burger, Frank Schmidt, Andreas Knorr, Shaul Mukamel, and Marten Richter
Proc. SPIE 8260 (2012) 82601V
Induced surface enhancement in coral Pt island films attached to Ag electrodes
H. Khoa Ly, Christopher Köhler, Anna Fischer, Julia Kabuß, Felix Schlosser, Mario Schoth, Andreas Knorr and Inez M. Weidinger
Langmuir DOI: 10.1021/la205139g (2012)
Quantum state tomography with nanooptical fields
Marten Richter, Felix Schlosser, Mario Schoth, Sven Burger, Frank Schmidt, Andreas Knorr, and Shaul Mukamel
arXiv:1201.1765v1 (2012)
Ultrafast nonlinear spectroscopy with spatially confined fields
F. Schlosser, M. Schoth, S. Burger, F. Schmidt, A. Knorr, S. Mukamel, and M. Richter
AIP Conf. Proc. 1398 (2011) 94
Finite element method for accurate 3D simulation of plasmonic waveguides.
S. Burger, L. Zschiedrich, J. Pomplun, F. Schmidt
Proc. SPIE 7604 (2010) 76040F
Spatiotemporal dynamics of optically generated electron-hole excitations in single-walled carbon nanotubes
Johanna H. Grönqvist, Matthias Hirtschulz, Andreas Knorr and Markus Lindberg
Phys. Rev. B 81 (2010) 035414
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