三重共振四波混频提高连续相干VUV产生的产额
Triple resonant four-wavemixing boosts the yield of continuous coherent VUV generation
摘要：
在真空紫外（VUV）波长区域121 nm的连续波相干辐射将是未来激光冷却捕获反氢的关键[1]。冷反氢将使物质和反物质之间的基本对称性的测试在前所未有的实验精度[2]和反物质引力的实验[3]。窄带连续激光辐射在真空紫外中的另一个令人着迷的应用是使用里德堡态中的单个捕获离子进行量子信息处理[4，5]。在这里，我们描述了高效的连续四波混频在真空紫外线通过使用三个不同的基本波长与一个复杂的选择失谐的非线性介质的共振。可以产生高达6微瓦的121 nm的真空紫外辐射，这对应于效率的三个数量级的增加。
英文摘要：
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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