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Updated: Jun 20, 2026

In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence
Published on: June 13, 2020
Tunable, coherent radiation in the Lyman-alpha region (1210-1290 A) using magnesium vapor
Abstract:
Tunable, coherent vacuum-ultraviolet (VUV) radiation has been produced in the 1210-1290-A region by four-wave sum mixing in magnesium vapor. This important extension of the wavelength range of tunable radiation was achieved using KrF-laser-pumped uv dye lasers, whose sum frequency then directly overlapped the first odd-parity autoionizing state in magnesium. With powers of 10 kW in the fundamental dye-laser beams, a flux >/=10(8) photons per pulse was produced at Lyman-alpha, with higher intensities at the longer wavelengths.
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