Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MO: Fachverband Molekülphysik
MO 18: High-Resolution Spectroscopy
MO 18.4: Vortrag
Donnerstag, 17. März 2022, 15:30–15:45, MO-H5
High resolution continuous wave spectroscopy of the A 2Σ+ ← X 2Π3/2 transition in nitric oxide — •Patrick Kaspar1, Fabian Munkes1, Philipp Neufeld1, Lea Ebel1, Yannick Schellander2, Robert Löw1, Tilman Pfau1, and Harald Kübler1 — 15. Physikalisches Institut and Center for Integrated Quantum Science and Technology IQST, Universität Stuttgart — 2Institut für Großflächige Mikroelektronik, Universität Stuttgart
Within the scope of the development of a new kind of gas sensor[1,2], we employ Doppler-free saturated absorption spectroscopy on the A 2Σ+ ← X 2Π3/2 transition in nitric oxide (NO) for different total angular momenta J on the P12 branch. Spectroscopy is performed in continuous wave operation at 226 nm in a 50 cm long through-flow cell. Via phase sensitive detection by a lock-in amplifier the hyperfine structure of the X 2Π3/2 state of NO is partially resolved. The data is compared to previous measurements [3], showing good agreement.
Investigation of the dependence of the spectroscopic feature on power and pressure, should yield hyperfine constants, natural transition linewidth and the collisional cross-section between NO molecules.
[1] P. Kaspar et. al., OSA Optical Sensors and Sensing, 19-23 July, 2021
[2] J. Schmidt et. al., Appl. Phys. Lett. 113, 01113 (2018)
[3] W.L. Meerts and A. Dymanus, J. of Mol. Spec. 44, 320-346 (1972)