Erlangen 2022 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 29: Optomechanics I
Q 29.4: Talk
Wednesday, March 16, 2022, 11:30–11:45, Q-H13
Cavity optomechanics with polymer drum resonators in fiber Fabry-Perot cavities — •Lukas Tenbrake1, Alexander Faßbender2, Sebastian Hofferberth1, Stefan Linden2, and Hannes Pfeifer1 — 1Institute of Applied Physics, University of Bonn, Germany — 2Institute of Physics, University of Bonn, Germany
Cavity optomechanical experiments in micro- and nanophotonic systems have demonstrated record optomechanical coupling strenghts, but require elaborate techniques for interfacing. Their scaling towards larger systems including many mechanical and optical resonators is limited. Here, we demonstrate a directly fiber-coupled tunable and highly flexibile platform for cavity optomechanics based on polymer structures in fiber Fabry-Perot cavities (FFPCs). The polymer structures are fabricated using 3D direct laser writing. They form drum resonators with frequencies in the MHz regime. Vacuum coupling strengths exceeding 20 kHz to micron sized FFPC modes are observed. The extreme flexibility of the laser writing process allows for a direct integration of the mechanical resonator on fiber mirrors, but also for larger scale structures on macroscopic substrates. Moreover, the tolerance of FFPCs to optical power allows the observation of strong optomechanical spring effects. The ease of interfacing, the favorable scaling capabilities and the possible integration with other systems like electrodes makes it a promising platform for current challenges in cavity optomechanics.