Mainz 2017 – scientific programme
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A: Fachverband Atomphysik
A 17: Rydberg atoms
A 17.7: Talk
Tuesday, March 7, 2017, 16:00–16:15, N 3
Towards a shotnoise limited optogalvanic vapor cell — •Johannes Schmidt1,2, Ralf Albrecht1, Patrick Schalberger2, Holger Baur2, Robert Löw1, Harald Kübler1, Norbert Frühauf2, and Tilman Pfau1 — 15. Physikalisches Institut, IQST, University of Stuttgart — 2Institute for Large Area Microelectronics, IQST, University of Stuttgart
We show how we want to integrate a shotnoise limited ion current detection into an optogalvanic vapor cell. Such a device can be used as a sensitive detector for electric and magnetic fields as well as highly excited atoms and molecules. We excite Alkali Rydberg atoms in an electrically contacted vapor cell [1,2]. These atoms are ionized due to collisions with the background gas. A voltage directs these charges towards the electrodes on the inside of the cell, where they are detected with an amplification circuit based on thin film technology [3]. Requirements for such a circuit are among others, that it is low noise, provides a stable amplification under changing environmental conditions and is chemically inert against the content of the cell. Different implementation schemes are proposed, compared and first results will be presented.
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P. Schalberger, et al., JSID 19, 496-502 (2011)