Regensburg 2016 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HL: Fachverband Halbleiterphysik
HL 6: Two-dimensional Materials (Joint session of HL, DS and O, organized by HL)
HL 6.4: Vortrag
Montag, 7. März 2016, 10:15–10:30, H16
Second-harmonic generation in MoS2 monolayers coupled to resonant nanoantennas — •Franz Johannes Friedrich Löchner1, Stefan Fasold1, Antony George2, Paul Douglas Harrison1, Christoph Menzel1, Andrey Turchanin2, Isabelle Staude1, Falk Eilenberger3, Frank Setzpfandt1, and Thomas Pertsch1 — 1Institute of Applied Physics, Abbe Center of Photonics , Friedrich-Schiller-Universität Jena, 07743 Jena, Germany — 2Institute of Physical Chemistry, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany — 3Fraunhofer Institute for Applied Optics and Precision Engineering, 07745 Jena, Germany
Two-dimensional monolayers of transition metal dichalcogenides (TMDs), a new class of direct band-gap semiconductors, recently have attracted a lot of attention due to their pronounced excitonic emission lines and strong second-order nonlinearity.
Coupling TMDs to resonant nanoantennas allows to further enhance these effects by concentrating the exciting optical field into a small volume. Such enhancement has been shown for excitonic emission using plasmonic nanoantennas. However, nonlinear optical effects in TMD-nanoantenna systems have not been studied yet.
In our contribution, we report on experimental investigations of second-harmonic generation in molybdenum disulfide (MoS2) monolayers coupled to nanoantennas, resonant at the exciting fundamental-harmonic wavelength. Polarization resolved measurements show the profound impact which the presence of the nanoantenna has on the second-harmonic radiation generated by the MoS2-monolayer.