Generation of high-spectral-brightness tunable XUV radiation at 83 nm

Abstract

High-spectral-brightness coherent XUV radiation has been produced by third-harmonic generation of a transformlimited- bandwidth KrF* laser in gaseous xenon. The observed XUV output, which was continuously tunable from 82.8 to 83.3 nm, had a peak power of 40 mW, a bandwidth <0.01 cm(-1), and absolute frequency control to within 0.04 cm(-1). The utility of this XUV source for high-resolution spectroscopic applications is demonstrated by absorption studies in molecular hydrogen.

Observation of two-XUV-photon ionization using harmonic generation from a short, intense laser pulse

“…The feasibility of such XUV sources for spectroscopic applications has been demonstrated very recently in accurate measurements of relative photoionization cross sections and autoionization profiles (Balcou et al 1995). The above-mentioned work includes a comparison to wave-mixing with tunable lasers of long pulse duration (Egger et al 1980, Hilbig et al 1982, Bokor et al 1983, Page et al 1987 and its applications to spectroscopy (Miyazaki et al 1989, Cromwell et al 1989, Marangos et al 1990, Eikema et al 1993.…”

Ionic alkali halide XUV laser feasibility study

“…Among them are: (1) ionic rare-gas alkali excimers which are isoelectronic to the rare-gas dimers, (2) and quartet levels of the alkali atoms or ions ,which retain metastability against autoionization and radiate quite strongly in the XUV.…”

Third-Harmonic Generation and Third-Order Frequency Mixing

“…85 Slabko et al 111 have used one that involves a two-photon resonance with the 6s8s 1 S 0 state for radiation from the fourth harmonic of an N d : glass laser to generate tunable radiation near 89.6 nm. 85 Slabko et al 111 have used one that involves a two-photon resonance with the 6s8s 1 S 0 state for radiation from the fourth harmonic of an N d : glass laser to generate tunable radiation near 89.6 nm.…”

“…Egger et al 111 and Rothschild et al 112 have reported third-harmonic conversion of radiation from a K r F laser in Xe, producing radiation near 83 nm. R e i n t j e s 1 0 8 -1 1 0 has reported the generation of radiation near 102.6 nm by third-harmonic conversion of radiation from an XeCl laser in Ar and Kr.…”