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Narrowband solid state vuv coherent source for laser cooling of antihydrogen |
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| Authors: | J. Mario Michan Gene Polovy Kirk W. Madison Makoto C. Fujiwara Takamasa Momose |
| Affiliation: | 1. Department of Physics, Nuclear Research Centre-Negev, P.O. Box 9001, Beer-Sheva, Israel 2. Nuclear Engineering Departments, Ben Gurion University, Beer-Sheva, Israel 3. Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, KeKarlovu 5, 12116, Prague 2, Czech Republic 4. Air Force Research Laboratory, Dayton, OH, USA 5. European Commission, Joint Research Center, Institute for Transuranium Elements, Fundamental Actinides Research, Postfach 2340, 76125, Karlsruhe, Germany 6. BL3, Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN, USA 7. NSLS, Brookhaven National Laboratory, Upton, NY, 11973, USA |
| Abstract: | We describe the design and performance of a solid-state pulsed source of narrowband (< 100 MHz) Lyman-α radiation designed for the purpose of laser cooling magnetically trapped antihydrogen. Our source utilizes an injection seeded Ti:Sapphire amplifier cavity to generate intense radiation at 729.4 nm, which is then sent through a frequency doubling stage and a frequency tripling stage to generate 121.56 nm light. Although the pulse energy at 121.56 nm is currently limited to 12 nJ with a repetition rate of 10 Hz, we expect to obtain greater than 0.1 μJ per pulse at 10 Hz by further optimizing the alignment of the pulse amplifier and the efficiency of the frequency tripling stage. Such a power will be sufficient for cooling a trapped antihydrogen atom from 500 mK to 20mK. |
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