Eikema K S, Walz J, Hänsch T W
Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany.
Phys Rev Lett. 2001 Jun 18;86(25):5679-82. doi: 10.1103/PhysRevLett.86.5679.
The 1S-2P transition in atomic hydrogen has been observed for the first time with almost natural linewidth. We employ a unique source of continuous coherent Lyman- alpha radiation based on four-wave mixing in mercury. The output of the source has been improved 40-fold to yield 20 nW. This demonstration shows that laser cooling and detection with continuous Lyman- alpha radiation has excellent prospects for future experiments with antihydrogen.
首次在几乎自然线宽条件下观测到了氢原子的1S - 2P跃迁。我们采用了一种基于汞中的四波混频的独特连续相干莱曼α辐射源。该源的输出功率提高了40倍，达到20纳瓦。这一演示表明，利用连续莱曼α辐射进行激光冷却和探测在未来的反氢实验中具有极好的前景。
