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arXiv · 1009.5480

Continuous Lyman-alpha generation by four-wave mixing in mercury for laser-cooling of antihydrogen

D. Kolbe·A. Beczkowiak·T. Diehl·A. Koglbauer·A. Müllers·M. Scheid·M. Stappel·R. Steinborn·J. Walz
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Abstract

Cooling antihydrogen atoms is important for future experiments both to test the fundamental CPT symmetry by high-resolution laser spectroscopy and also to measure the gravitational acceleration of antimatter. Laser-cooling of antihydrogen can be done on the strong 1S-2P transition at the wavelength of Lyman-alpha (121.6nm). A continuous-wave laser at the Lyman-alpha wavelength based on solid-state fundamental lasers is described. By using a two-photon and a near one photon resonance a scan across the whole phasematching curve of the four-wave mixing process is possible. Furthermore the influence of the beam profile of one fundamental beam on the four-wave mixing process is studied.

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D. Kolbe, A. Beczkowiak, T. Diehl, A. Koglbauer, A. Müllers, M. Scheid, M. Stappel, R. Steinborn, J. Walz. 2010-09-28. Continuous Lyman-alpha generation by four-wave mixing in mercury for laser-cooling of antihydrogen. https://doi.org/10.1139/p10-080

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