Mainz 2017 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 53: Poster: Quantum Optics and Photonics III

Q 53.57: Poster

Thursday, March 9, 2017, 17:00–19:00, P OG2

Fabrication of micro resonator mirrors using CO₂ laser — •Max Deisböck, Stefan Häußler, Andrea Filipovski, Riccardo Cipolletti, and Alexander Kubanek — Institute for Quantum Optics, Ulm University, D-89081 Ulm, Germany

Cavity QED is a highly innovative and fast growing field. It investigates the interaction between optical transitions of single atoms and light within an optical resonator. In former times this would just have been a textbook example. In the meantime there was tremendous technological progress e.g. in stabilizing cavities, producing mirrors with the required quality and control of atomic systems, so that the example becomes reality. In order to reach cavity QED regime the coupling rate g needs to be optimized. Therefore either the mode volume V has to be kept small or the quality factor Q has to be large.
Production of resonator mirrors faces many challenges in order to achieve high quality. This includes the control of inhomogeneities, impurities and surface roughness.
Here, we want to achieve small V for high finesse cavities. Therefore, we need good surface quality and high radius of curvature (ROC). We want to realize the goal using a CO₂ laser that is tightly focused. We aim to create structures with ROC fundamentally limited by CO₂ laser wavelength.