Regensburg 2025 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 38: Nanomechanical systems (joint session HL/TT)
HL 38.3: Vortrag
Mittwoch, 19. März 2025, 15:30–15:45, H17
Towards cavity optomechanics using 2D materials — •Petricia Sara Peter1,2, Lukas Schleicher1,2, Anne Rodriguez1,2, Leonard Geilen2,3, Alexander Musta2,3, Benedict Brouwer2,3, Alexander Holleitner2,3, and Eva Weig1,2 — 1Chair of Nano and Quantum Sensors, TU Munich, Germany — 2Munich Center for Quantum Science and Technology (MCQST), Munich, Germany — 3Walter Schottky Institute, TU Munich, Germany
Two-dimensional (2D) materials, such as hexagonal boron nitride (hBN), are promising candidates for advancing cavity optomechanics due to their low mass, high mechanical strength, and unique optical properties. This work focuses on the fabrication of freely suspended hBN membranes on silicon oxide (SiO2) and silicon nitride (Si3N3) substrates, utilizing a water-assisted wet transfer technique. Compared to the dry transfer method, this approach minimizes inhomogeneous stress and preserves optimal mode shapes, improving mechanical quality factors. A Michelson interferometer is used to measure the mechanical properties of the resulting drumhead resonators, including vibrational resonances, mode shapes, and quality factors. These results provide important insights into the performance and quality of the resonator, laying the groundwork for incorporating 2D materials into cavity optomechanical studies.
Keywords: 2D materials; Membranes; Optomechanics; Resonators