High-resolution saturation spectroscopy of singly-ionized iron with a pulsed uv laser

Details High-resolution saturation spectroscopy of singly-ionized iron with a pulsed uv laser High-resolution saturation spectroscopy of singly-ionized iron with a pulsed uv laser

2007-09-26

arxiv.org/abs/0709.4032v1

Physics

Atomic Physics

9 pages, 5 figures, updated Fig. 3. For submission to J. Phys. B

Scientific paper

10.1088/0957-0233/19/4/045602

We describe the design and realization of a scheme for uv laser spectroscopy of singly-ionized iron (Fe II) with very high resolution. A buffer-gas cooled laser ablation source is used to provide a plasma close to room temperature with a high density of Fe II. We combine this with a scheme for pulsed-laser saturation spectroscopy to yield sub-Doppler resolution. In a demonstration experiment, we have examined an Fe II transition near 260 nm, attaining a linewidth of about 250 MHz. The method is well-suited to measuring transition frequencies and hyperfine structure. It could also be used to measure small isotope shifts in isotope-enriched samples.

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