Hannover 2020 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 39: Posters: Quantum Optics and Photonics III
Q 39.32: Poster
Mittwoch, 11. März 2020, 16:30–18:30, Empore Lichthof
Novel Optomechanical Coupling Mechanisms in nanostructured Metasurfaces — •Florian Feilong Bruns1, Carol B. Rojas Hurtado3, Thomas Siefke2, and Stefanie Kroker1,3 — 1Technische Universität Braunschweig, LENA Laboratory for Emerging Nanometrology, Universitätsplatz 1, 38106 Braunschweig, Germany — 2Friedrich-Schiller-Universität Jena, Abbe Center of Photonics, Institute of applied Physics, Max-Wien-Platz 1, 07743 Jena, Germany — 3Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
Nanostructured metasurfaces with mechanical degrees of freedom provide a highly flexible platform for optomechanical systems. In this work we investigate bilayer metasurfaces as a platform for dispersive and dissipative coupling in the frame of cavity optomechanics. In the upper layer, the metasurface supports bound states in the continuum, optical modes with high field enhancement. Simultaneously, the bottom layer provides a high mechanical susceptibility thus featuring strong optomechanical coupling. We consider two different aspects: We study metasurfaces for tunable intracavity interactions in multimode systems. Furthermore, we show, that the mechanical loss of mechanical oscillators made of high-purity GaAs can be changed by the light intensity. This effect implies a novel optomechanical coupling mechanism that will enrich the dynamics of experiments in cavity optomechanics.