Regensburg 2022 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 35: Poster Tuesday: Plasmonics and Nanooptics 1

O 35.5: Poster

Dienstag, 6. September 2022, 11:00–13:00, P3

Transverse magnetic routing of light emission in hybrid plasmonic-semiconductor nanostructures: Grating period dependence — •Carolin Harkort¹, Lars Klompmaker¹, Alexander N. Poddubny², Leonid V. Litvin³, Ralf Jede³, Grzegorz Karczewski⁴, Sergij Chusnutdinow⁴, Tomasz Wojtowicz⁵, Dmitri R Yakovlev^1,2, Manfred Bayer^1,2, and Ilya A. Akimov^1,2 — ¹Experimentelle Physik 2, Technische Universität Dortmund, 44221 Dortmund, Germany — ²St. Petersburg — ³Raith GmbH, Konrad-Adenauer-Allee 8, 44263 Dortmund, Germany — ⁴Institute of Physics, Polish Academy of Sciences, PL-02668 Warsaw, Poland — ⁵International Research Centre MagTop, PL-02668 Warsaw, Poland

We use plasmonic gratings to achieve transverse magnetic routing of the light emission of a nearby quantum well exciton via an external magnetic field. In a hybrid plasmonic-semiconductor (Cd,Mn)Te/(Cd,Mg)Te quantum well (QW) structure the effect of the plasmonic grating period on the directional emission spectra is measured using a Fourier imaging setup to obtain angular and energy resolved photoluminescence spectra for opposite transverse magnetic fields. We achieve a strong directionality of the QW emission of up to 15% at low temperature of about 5 K and magnetic fields of 500 mT with a grating period of 240 nm and demonstrate the effect of the changing SPP dispersion on the directional emission characteristics.