Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 27: Poster: Quantum Optics and Photonics II
Q 27.52: Poster
Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof
A monolithic doubling cavity for the clock laser of a transportable Al+ clock — •Stephan Hannig1, Nils Scharnhorst1, Johannes Kramer1, Ian D. Leroux1 und Piet O. Schmidt1,2 — 1Physikalisch-Technische Bundesanstalt, 38116 Braunschweig, Germany — 2Leibnitz Universität Hannover, 30167 Hannover, Germany
We present the status of our second generation aluminium ion optical clock using quantum logic techniques for cooling and reading out the 27Al+ clock ion via a 40Ca+ logic ion.
We have set up a vacuum chamber including a segmented multi-layer linear Paul trap. The system is intended to not only act as a reference for the first Al+/Ca+ system developed in our laboratory, but also paves the way towards experimental investigation of novel interrogation schemes of more than one clock ion.
To drive the clock transition at 267.4 nm, light from a fiber laser is frequency doubled twice. While the first doubling takes place in a commercially available waveguide, we built a mechanically monolithic bow tie cavity for the second step. Here, we present the design focussed on low sensitivity on mechanical and acoustic disturbances. Since the clock is planed to be portable, high stability and reproducibility of the alignment were additional design goals.