Dresden 2014 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 37: Posters: Plasmonics, Electronic Structure and Spin-Orbit Interaction, Semiconductor and Insulator Surfaces, Nanostructures
O 37.40: Poster
Dienstag, 1. April 2014, 18:30–22:00, P2
Diffraction-limited few-cycle shaped laser pulses for plasmon microscopy — •Sebastian Goetz1, Monika Pawlowska1, Christian Dreher1, Christian Rewitz1, Enno Krauss2, Peter Geisler2, Gary Razinskas2, Bert Hecht2,3, and Tobias Brixner1,3 — 1Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany — 2Nano-Optics and Biophotonics Group, Experimentelle Physik 5, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany — 3Röntgen Center for Complex Material Systems (RCCM), Am Hubland, 97074 Würzburg, Germany
For the investigation of ultrafast processes on the nanoscale by far-field radiation, the temporal resolution of femtosecond laser pulses has to be combined with the spatial resolution of a high-NA microscope. Both resolutions need to be conserved when the incoming light field is manipulated, which is a prerequisite for the demanding concept of coherent control. These functionalities are implemented in our group by pairing confocal microscopy with phase and amplitude pulse shaping of few-cycle NIR pulses using an LCD pulse shaper in 4f single-pass geometry. The capability of the setup is demonstrated by investigating the influence on the diffraction-limited focus of LCD imperfections and spatio-temporal coupling. We examine the laser focus on plain gold surfaces and nanostructures by spectrally and spatially resolved analysis of reflections from the sample plane.