Dr. Jan Renger

  • Senior Scientist
  • Room: A.3.232
  • Telephone: +49 9131 7133341
  • E-mail

Tailoring the optical properties at the micro- and nanoscale is key to enable new experiments in the field of quantum optics and biophotonics. To this end, I use my strong background in numerical simulations as well as nano- and microfabrication techniques together with the expertise in spectroscopy, linear and nonlinear optics to enable and conduct experiments.

2005

Resonant light scattering by near-field-induced phonon polaritons

Jan Renger, Stefan Grafström, Lukas M. Eng, Rainer Hillenbrand

Physical Review B 71 075410 (2005) | Journal

The scattering of light at a metallic nanoparticle in the vicinity of a SiC surface shows a strong peak around the surface phonon polariton resonance of the SiC substrate in the midinfrared spectral region. Close to the surface, the polarized particle couples to localized phonon polaritons. This near-field interaction shifts the peak to lower frequencies and causes a splitting into two modes for distances below 5nm. We analyze this phenomenon by applying an accurate numerical three-dimensional model based on the multiple-multipole method. The results are compared with the predictions of the analytical dipole model as frequently used to explain the contrast in apertureless scattering-type scanning near-field optical microscopy. We find a qualitative agreement but the dipole model turns out to underestimate the spectral shift quantitatively.


MPL Research Centers and Schools