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Q: Fachverband Quantenoptik und Photonik
Q 29: Poster I
Q 29.17: Poster
Tuesday, March 3, 2009, 16:30–19:00, VMP 8 Foyer
Single Mode Tunable All Solid-State UV Laser at the 282 nm Clock Transition of 119Hg+ — •Thorsten Schmitt, Thomas A. Puppe, Andreas Nendel, Frank Lison, and Wilhelm G. Kaenders — Toptica Photonics AG, Lochhamer Schlag 19, 82166 Graefelfing / Munich, Germany
There is a growing interest in precision laser sources in the ultraviolet. Particularly demanding applications are optical frequency standards based on spectroscopy of trapped atoms or ions [1].
We present a tuneable solid-state cw laser source providing more than 30 mW at the 282 nm clock transition of 119Hg+. An extended cavity diode laser (ECDL) at 1126 nm seeds a Yb-doped diode-pumped fiber amplifier and is then frequency-quadrupled in two successive frequency-doubling stages. The output of the second harmonic generation (SHG) shows a conversion efficiency exceeding 50 % and good longterm stability. The spectral properties of the system are defined by the master oscillator and the background added by the Yb-doped-fiber amplifier is largely suppressed. ECDLs are known to achieve the extremely narrow linewidths necessary for high-resolution laser spectroscopy [2,3]. Hence, the presented laser system provides a rugged, all solid-state laser well suited for these precision applications.
[1] J. L. Hall, Nobel Lecture (2005)
[2] H. Stoehr et al., Opt. Lett. 31, 736 (2006)
[3] J. Alnis et al., PRA 77, 053809 (2008)