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arXiv · 1203.2121

Triple resonant four-wavemixing boosts the yield of continuous coherent VUV generation

Daniel Kolbe·Martin Scheid·Jochen Walz
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Abstract

Continuous-wave coherent radiation in the vacuum ultraviolet (VUV)wavelength region at 121 nm will be essential for future laser-cooling of trapped antihydrogen [1]. Cold antihydrogen will enable both tests of the fundamental symmetry between matter and antimatter at unprecedented experimental precision [2] and also experiments in antimatter gravity [3]. Another fascinating application of narrowband continuous laser radiation in the VUV is quantum information processing using single trapped ions in Rydberg-states [4, 5]. Here we describe highly efficient continuous four-wave mixing in the VUV by using three different fundamental wavelengths with a sophisticated choice of detunings to resonances of the nonlinear medium. Up to 6 microwatts of vacuum ultraviolet radiation at 121 nm can be generated which corresponds to an increase of three orders of magnitude in efficiency.

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Daniel Kolbe, Martin Scheid, Jochen Walz. 2012-03-09. Triple resonant four-wavemixing boosts the yield of continuous coherent VUV generation. https://doi.org/10.1103/physrevlett.109.063901

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