Dresden 2011 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 36: Laseranwendungen und Photonik 1

Q 36.5: Vortrag

Mittwoch, 16. März 2011, 15:30–15:45, SCH 251

Towards nonlinear optics in a mercury-filled hollow core fiber — •Andreas Koglbauer, Anna Beczkowiak, Thomas Diehl, Daniel Kolbe, Andreas Müllers, Matthias Sattler, Matthias Stappel, Ruth Steinborn, and Jochen Walz — Institut für Physik, Johannes Gutenberg-Universität Mainz und Helmholtz Institut Mainz, 55099 Mainz

The generation of continuous coherent vacuum ultraviolet (VUV) light at 121.56 nm, the cooling transition in (anti-)hydrogen, is essential for future precision experiments with trapped antihydrogen. Due to the short wavelength, this is typically achieved by four-wave-mixing in vapors.

It has already been successfully demonstrated by sum-frequency-generation in mercury-vapor, which gives an output power of 0.4 nW [1]. One possibility to enhance the efficiency of this process is to stretch the interaction region. This can be achieved by confining the light in a vapor-filled hollow core fiber of several cm length.

We compare this approach to the mixing process with Gaussian beams and estimate the achievable VUV powers considering different fiber lengths and radii. Moreover we present the current status of the experiment, in particular the generation and detection of mercury vapor within the fiber.

[1] Optics Express, Vol. 17, Issue 14, pp. 11274-11280 (2009)