Rostock 2019 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 11: Ultra-cold plasmas and Rydberg systems
A 11.2: Poster
Dienstag, 12. März 2019, 16:30–18:30, S Fobau Physik
A gas sensor based on Rydberg excitations — •Johannes Schmidt1,2,5, Patrick Kaspar1,5, Fabian Munkes1,5, Denis Djekic3,5, Patrick Schalberger2,5, Holger Baur2,5, Robert Löw1,5, Tilman Pfau1,5, Jens Anders3,5, Norbert Frühauf2,5, Edward Grant4, and Harald Kübler1,5 — 15th Institute of Physics — 2Institute for Large Area Microelectronics — 3Institute for Smart Sensors — 4Department of Chemistry, UBC — 5University of Stuttgart, Center for integrated quantum science and technology (IQST)
Sensitive and selective gas sensors become increasingly important for the analysis of the exhaled breath of mammals. Our scheme is based on the excitation of Rydberg states in the molecule of interest. Subsequent collisions with the background gas and predissociation will lead to ionization. The emerging charges can then be measured as a current. The occurrence of a current is an unequivocal indication of the presence of the molecule under consideration. We demonstrate technology readiness level 3 of our scheme at the example of the detection of 100 ppb Rb in a background gas of N2 with a sensitivity of 10 ppb/√Hz. We further experimentally verify the applicability in real life on the detection of nitric oxide in a gas mixture up to ambient pressure.
J. Schmidt, et al., SPIE 10674 (2018)
J. Schmidt, et al., Appl. Phys. Lett. 113, 011113 (2018)