Abstract
Experimental findings obtained over the last several years clearly demonstrate that spectrally bright tunable coherent radiation in the 10- to 100-nm spectral range can be generated with the use of rare-gas halogen (RGH) laser systems of special high-brightness design. Evidence consisting of (1) the established scaling properties of RGH media, (2) the discovery of anomalous radiative coupling1 to high-Z atoms involving as many as N = 99 quanta, and (3) the observation of state selective atomic inner-shell multiquantum excitation2,3 enabling the generation of stimulated emission at wavelengths as short as 91.6 nm supports the conclusion that coherent short-wavelength generation may be extended to the kilovolt spectral region. The experimental data available have conclusively shown that the direct multiquantum excitation of appropriate gain media is the superior approach for the production of short-wavelength radiation.
© 1984 Optical Society of America
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