Heidelberg 2015 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 62: Poster: Quantum Optics and Photonics III
Q 62.7: Poster
Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer
Laser System for Two-Photon Rydberg Excitation of Trapped Strontium Ions — •Fabian Pokorny1, Gerard Higgins1, Christine Maier2, Johannes Haag1, Florian Kress1, Yves Colombe1, and Markus Hennrich1 — 1Institut für Experimentalphysik, Universität Innsbruck, Austria — 2Institut für Quantenoptik und Quanteninformation, Innsbruck, Austria
Trapped Rydberg ions form a novel physical system, combining the technologies of neutral Rydberg atoms and trapped ions [1]. Such a system promises interesting Rydberg physics, since the ions are trapped in an oscillating electric field [1-3].
Here we present our progress realising such a system of trapped Rydberg ions. In particular, we show the laser system we want to use for the two-photon Rydberg excitation of strontium ions trapped in a linear Paul trap. The photons involved in this process have wavelengths of 243nm and 305 - 310nm. The highly tunable UV laser light at 305nm is generated by sum-frequency generation and subsequent second harmonic generation. To overlap both laser beams we use photonic-crystal fibers. Hydrogen-loading the fibers successfully cures colour centres and prevents degeneration [4]. With achromatic lenses a focus of roughly 10µ m is achieved on the ions for both wavelengths.
[1] M. Müller, et al., New J. Phys. 10, 093009 (2008)
[2] F. Schmidt-Kaler, et al., New J. Phys. 13, 075014 (2011)
[3] W. Li, and I. Lesanvoski, Appl. Phys. B, 117, 37 (2014)
[4] Y. Colombe, et al., Opt. Express, 22, 19783 (2014)