Abstract
Resonant third-order frequency conversion of intense dye laser radiation is a powerful technique for the generation of tunable radiation in the spectral region of the VUV.1 The two-photon resonant enhancement of the induced polarization provides conversion efficiencies of up to 0.2% at input intensities that can be produced easily with pulsed dye-laser systems. With additional enhancement of the nonlinear susceptibility by appropriate autoionizing states, it was even possible to generate cw VUV radiation by sum-frequency mixing of multimode cw laser light.2
© 1986 Optical Society of America
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