Berlin 2012 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 34: Poster Session I (Graphene; Plasmonics and nanooptics; Coherence and coherent control in nanophotonics and plasmonics)
O 34.34: Poster
Dienstag, 27. März 2012, 18:15–21:45, Poster E
Coherent two-dimensional nanoscopy – insights into an advanced spectroscopic technique — Martin Aeschlimann1, Tobias Brixner2, Alexander Fischer1, •Christian Kramer2, Pascal Melchior1, Walter Pfeiffer3, Christian Schneider1, Christian Strüber3, Philip Tuchscherer2, and Dmitri V. Voronine4 — 1Fachbereich Physik and Research Center OPTIMAS, Technische Universität Kaiserslautern, Erwin-Schrödinger-Str. 46, 67663 Kaiserslautern, Germany — 2Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany — 3Fakultät für Physik, Universität Bielefeld, Universitätsstr. 25, 33615 Bielefeld, Germany — 4Institute for Quantum Science and Engineering, Texas A&M University, College Station, TX 77840, USA
Coherent two-dimensional nanoscopy combines the principle of coherent two-dimensional spectroscopy with photoemission electron microscopy (PEEM). Using a sequence of four ultrashort laser pulses for excitation ensures high temporal resolution and detection of the emitted photoelectrons with a PEEM guarantees high spatial resolution below the optical diffraction limit. We present the concept of 2D nanoscopy for a quantum three-level system and compare the technique with conventional 2D spectroscopy. Furthermore we go into details about the experimental realization of this method and explain the evaluation of the measured data, i.e. the calculation of the local 2D nanospectra.