Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 43: Poster II
Q 43.10: Poster
Mittwoch, 20. März 2013, 16:00–18:30, Empore Lichthof
VUV generation in a hollow core fiber — •Andreas Koglbauer1, Thomas Diehl1,2, Daniel Kolbe1,2, Matthias Stappel1,2, Ruth Steinborn1,2, and Jochen Walz1,2 — 1Johannes Gutenberg-Universität Mainz, 55099 Mainz — 2Helmholtz-Institut Mainz, J.J.-Becher-Weg 36, 55128 Mainz
For future laser cooling of anti-hydrogen as well as quantum information processing with Rydberg ions, there is a need for a strong continuous vacuum ultraviolet (VUV) laser source in the region of 121-123 nm. Non-degenerate four-wave mixing (FWM) in metal vapors is a well-established method for VUV generation. Utilizing multi-photon resonances of the nonlinear medium, we recently demonstrated an important improvement in the mixing efficiency in mercury [1,2]. Further power enhancement can be achieved with an elongated interaction region of the fundamental beams, by confining the light in a vapor filled hollow core fiber.
We present a study of possible phase-matching scenarios and their associated VUV efficiencies, considering dispersion and losses due to the medium as well as the fiber. A gain of more than three orders of magnitude in the output power should be feasible. A sufficient mercury vapor within the fiber is demonstrated via absorption spectroscopy on the 61S−63P transition in mercury transverse through the fiber, as well as the observation of two-photon resonance with longitudinally coupled beams.
[1] arXiv:1209.1519 (2012)
[2] Phys. Rev. Lett. 109, 063901 (2012)