SAMOP 2021 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 11: Ultra-cold plasmas and Rydberg systems (joint session A/Q)
A 11.4: Poster
Dienstag, 21. September 2021, 16:30–18:30, P
Towards an optogalvanic flux sensor for nitric oxide based on Rydberg excitations — Patrick Kaspar1,5, Fabian Munkes1,5, •Yannick Schellander3, Lars Baumgärtner2, Lea Ebel1, Denis Djekic2, Patrick Schalberger3, Holger Baur3, Jens Anders2,5, Edward Grant4, Norbert Frühauf3, Robert Löw1,5, Tilman Pfau1,5, and Harald Kübler1,5 — 15 Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart — 2Institut für Intelligente Sensorik und Theoretische Elektrotechnik, Universität Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart — 3Institut für Großflächige Mikroelektronik, Universität Stuttgart, Allmandring 3b, 70569 Stuttgart — 4Department of Chemistry & Department of Astronomy, The University of British Columbia, 2036 Main Mall, Vancouver, BC Canada V6T 1Z1 Vancouver, Canada — 5Center for Integrated Quantum Science and Technology, Universität Stuttgart
We demonstrate the applicability of a new kind of gas sensor based on Rydberg excitations. From a gas mixture the molecule in question is excited to a Rydberg state. By succeeding collisions with all other gas components this molecule becomes ionized and the emerging electrons can be measured as a current. In a proof of concept experiment a detection limit of 10 ppm in a background of He was demonstrated [1,2]. We show first results of the continous wave sensor prototype and first signals of Doppler-free laser spectroscopy on nitric oxide.
[1] J. Schmidt, et. al., Appl. Phys. Lett. 113, 011113 (2018)
[2] J. Schmidt, et. al., SPIE 10674 (2018)