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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 excitationsPatrick 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 Kübler1,515 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)

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