Druckansicht der Internetadresse:

Department of Physics

Chair for Experimental Physics III - Ultrafast Nanooptics

Print page

Nearfield microscopy

Light is able to excite the free electrons of a metal to collective oscillations. In noble metal nanoparticles of 10-100 nm diameter this leads to a resonance in the visible spectral range, the so-called plasmon resonance. One finds an enhanced electro-magnetic field in the environment of the nanoparticle. We use this field enhancement to investigate weak optical effects on the nanoscale. Plasmonic nanoparticles can thus be employed as optical nanoantennas. A moving antenna is the idea of a scanning optical nearfield microscope. We develop and use such a microscope to investigate ultrafast processes with a spatial resolution of only a few nanometers.

Webmaster: Univ.Prof.Dr. Markus Lippitz

Facebook Twitter Youtube-Kanal Instagram LinkedIn UBT-A Contact