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Q: Fachverband Quantenoptik und Photonik
Q 32: Precision Measurements and Metrology (Optical Clocks)
Q 32.3: Vortrag
Mittwoch, 11. März 2020, 14:30–14:45, a310
Rubidium vapor-cell frequency references based on 5S to 6P transitions — •Julien Kluge1, Klaus Döhringshoff1,2, Conny Glaser3, Florian Karlewski4, Jens Grimmel3, Manuel Kaiser3, Andreas Günther3, Helge Hattermann3, József Fortágh3, and Markus Krutzik1,2 — 1Institut für Physik, Humboldt-Universität zu Berlin — 2Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Berlin — 3Center for Quantum Science, Physikalisches Institut, Eberhard Karls Universität Tübingen — 4HighFinesse GmbH
Optical frequency standards based on spectroscopy of Rubidium vapor benefit from high component technology readiness level, allow for vapor-cell micro-integration and therefore physics package miniaturization. In this presentation, we discuss the optical properties of Rubidium beyond the D1/D2 line and show recent results of high precision absolute frequency measurements of the 6P manifold in conjunction with hyperfine structure constants evaluation. Additionally, we give an overview of two concepts we currently study for future compact frequency references onboard small satellites. One is based on direct modulation transfer spectroscopy of the 5S→ 6P transition using GaN based diode laser operating at 420 nm and the other on spectroscopy of the two-photon transition from 5S→ 5D at 778 nm.
This work is supported by the DLR with funds from the BMWi under grant number 50WM1857, 50RK1971 as well as by the DFG (SSP 1929 GiRyd and CIT) and BMBF (FKZ: 13N14903). C. Glaser would like to thank the Evangelische Studienstiftung Villigst e.V.