Abstract
Frequency tripling, four-wave mixing, and high-order nonlinear interactions of high-intensity laser radiation in rare gases and hydrogen are mechanisms considered and used for the generation of coherent VUV, XUV, and soft-x-ray radiation. Currently, high-power laser systems in the IR, visible, and UV spectral range provide pump-laser radiation for these nonlinear interactions. With these laser systems, the XUV and soft-x-ray spectral ranges can be covered only by high-order interactions with low conversion efficienies. Consequently, considerable improvement could be introduced by high-power laser systems operating at VUV wavelengths, this would permit the generation of coherent radiation below 100 nm by efficient low-order nonlinear optical processes.
© 1995 Optical Society of America
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