Heidelberg 2015 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster: Quantum Optics and Photonics III
Q 62.33: Poster
Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer
towards resolved sideband spectroscopy of barium ion in a hybrid atom-ion experiment — •Amir Mahdian, Joschka Wolf, Artjom Krükow, Amir Mohammadi, and Johannes Hecker denschlag — Institut für Quantenmaterie, Universität Ulm, Deutschland
In our hybrid atom-ion experiment we investigate the interaction of cold Ba+ ions with ultracold Rb atoms. A reliable way of measuring the ion temperature would enhance our understanding of the dynamics of atom-ion interactions. A resolved sideband system is therefore being implemented into our setup alongside providing the possibility to cool down the ion beyond the Doppler limit. The 6S1/2→ 5D5/2 transition is chosen for our sideband system. Therefore, a narrow band laser is provided to derive the shelving transition at 1762 nm. To achieve a linewidth much smaller than the typical trapping frequencies of our Paul trap(40 kHz) and long term frequency drifts in the sub kHz regime, we set up a high-Q optical cavity. In order to stabilize the laser to this cavity we will use a broadband electro-optical modulator operated in a two-tone configuration [1]. In addition to this shelving laser, we need a second laser resonant to the 5D5/2→ 6P3/2 transition in order to deshelve the ion. A sum frequency mixing technique has been employed to generate 614 nm light using two high-power lasers at 1064 nm and 1450 nm. In this poster we show our progress and the capabilities of such a system.
[1] J.I. Thorpe, K.Numata, J.Livas, Opt. Expr. 16 15980(2008)