Abstract
Recently developed high-power semiconductor laser amplifiers offer new ways to construct laser sources for high-resolution spectroscopy in the blue and ultraviolet. Such sources overcome a number of limitations that are connected to the standard single-mode ring laser systems. A source of this kind can contribute significantly to the feasibility of antihydrogen spectroscopy. Experiments with hydrogen will also benefit greatly. The construction of an optical hydrogen frequency standard becomes realistic and experiments with demanding atomic preparation techniques as, for instance, optical cooling in magnetic traps are facilitated.
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