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Mainz 2017 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 31: Poster: Quantum Optics and Photonics I

Q 31.76: Poster

Tuesday, March 7, 2017, 17:00–19:00, P OG1+2

SHG in Periodically Poled Lithiumniobate for a CW Laser System used for Cooling of Relativistic Ion Beams — •Sebastian Klammes, Daniel Kiefer, and Thomas Walther — TU Darmstadt, Institut für Angewandte Physik, Laser- und Quantenoptik, Schlossgartenstr. 7, 64289 Darmstadt

Laser cooling has become an additional method for increasing the phase space density of ion beams in storage rings [1]. In order to reduce the emittance of the circulating ion beam, suitable conditions must be fulfilled, e.g. radiation of a specific wavelength and an appropriate power must be provided. To this end a fast tunable cw laser system with two SHG enhancement cavities has been developed in the past to achieve the correct wavelength for ion beam cooling [2]. In 2012, the cw laser system was successfully used for cooling C3+-ions [3]. Further developments of the cw laser system led to the replacement of the first enhancement cavity with a magnesium oxide doped periodically poled LiNbO3 (MgO:PPLN) crystal. Observations and experiences with the MgO:PPLN crystal will be presented. Additionally, the latest results and the current status will be featured. [1] U. Schramm and D. Habs. Crystalline ion beams. Progress in Particle and Nuclear Physics 53 (2004), 583-677. [2] T. Beck, B. Rein, F. Sörensen and T. Walther. Solid-state-based laser system as a replacement for Ar+ lasers. Opt. Lett. 41, 4186-4189 (2016) [3] T. Beck. Lasersystem zur Kühlung relativistischer C3+-Ionenstrahlen in Speicherringen. Dissertation. TU Darmstadt (2015).

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