Regensburg 2013 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 90: Poster Session: Quantum information systems; Optical properties; Ultrafast phenomena

HL 90.5: Poster

Thursday, March 14, 2013, 16:00–20:00, Poster A

Phase resolved near field measurements on surface plasmons — •Lena Simone Fohrmann, Jens Ehlermann, Jan Siebels, and Stefan Mendach — Institute of Applied Physics, University of Hamburg, Germany

As Surface plasmons can be confined to small nanostructure sized areas - much smaller than the wavelength of the exciting free space photons - they are thought to combine the benefits of photonics and microelectronics, i.e. high frequency and small dimensions, in future integrated devices [1].

Scanning near field optical microscopy is an outstanding tool to investigate the interaction of surface plasmons with nanostructures prepared on metal films. In combination with heterodyne detection it is possible to directly detect the amplitude and phase of near field distributions on sample surfaces [2][3].

Here we present phase resolved near field measurements of surface plasmons propagating on gold films and their interaction with plasmonic nanostructures.

We gratefully acknowledge financial support of the Deutsche Forschungsgemeinschaft via the Graduiertenkolleg 1286.

[1] D. Chang et al., Nature Physics, 3, 807-812 (2007)

[2] M.L.M. Balistreri et al., Phys. Rev. Lett. 85, 294 (2000)

[3] A. Nesci et al., Optics Letters, 26, 208-210 (2001)