Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 12: Ultra-cold atoms, ions and BEC (with A)
Q 12.31: Poster
Montag, 29. Februar 2016, 16:30–19:00, Empore Lichthof
SOC2: Neutral-atom Space Optical Clock — •Sruthi Viswam1, Lyndsie Smith1, Wei He1, Dariusz Swierad1, Joshua Hughes1, Yeshpal Singh1, Kai Bongs1, Stefano Origlia2, Soroosh Alighanbari2, Stefan Schiller2, Soren Dorscher3, Stefan Vogt3, Christian Lisdat3, and Uwe Sterr3 — 1University of Birmingham, United Kingdom — 2Heinrich-Heine Universität Düsseldorf, Germany — 3Physikalisch-Technische Bundesanstalt, Germany
Several different atoms and ions are used to build ultra-stable clocks which might find application in time referencing, gravity measurement, data encryption, navigation etc. although it seems that it is strontium that is going to replace the current definition of time. Many groups around the world have already proven reliability and robustness of the strontium optical lattice clock and the next step is to make it more transportable and mobile. In this poster we report our progress and results from the robust transportable Space Optical Clock. So far, the robust preparation of cold Sr-88 atoms in a first stage magneto-optical trap (MOT) with 8E+6 and second-stage red broadband MOT with a transfer efficiency of 40 percent , single frequency MOT with 80 percent transfer efficiency and lattice with 1E+5 atoms is achieved. The compact atomic package is transported from the University of Birmingham, United Kingdom to Physikalisch-Technische Bundesanstalt , Germany.Next step is to lock the clock laser to the atomic transition. Lasers that are frequency stabilized by locking to the resonant mode of ultra low expansion cavities have been used for the cooling purpose.