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.

2003

Plasmon‐coupled tip‐enhanced near‐field optical microscopy

A. Bouhelier, J. Renger, M. R. Beversluis, L. Novotny

Journal of Microscopy 210 220-224 (2003) | Journal

Near the cut-off radius of a guided waveguide mode of a metal-coated glass fibre tip it is possible to couple radiation to surface plasmons propagating on the outside surface of the metal coating. These surface plasmons converge toward the apex of the tip and interfere constructively for particular polarization states of the initial waveguide mode. Calculations show that a radially polarized waveguide mode can create a strong field enhancement localized at the apex of the tip. The highly localized enhanced field forms a nanoscale optical near-field source.


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