A reliable cw Lyman-α laser source for future cooling of antihydrogen
Abstract
We demonstrate a reliable continuous-wave (cw) laser source at the 1\,S--2\,P transition in (anti)hydrogen at 121.56\,nm (Lyman-α) based on four-wave sum-frequency mixing in mercury. A two-photon resonance in the four-wave mixing scheme is essential for a powerful cw Lyman-α source and is well investigated.
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