Precise laser frequency scanning using frequency-synthesized optical frequency sidebands - Application to isotope shifts and hyperfine structure of mercury

Based on an efficient broadband electrooptic modulator producing RF optical sidebands locked to a stable cavity, a tunable dye laser can be scanned under computer control with frequency-synthesizer precision. Cavity drift is suppressed in software by using a strong feature in the spectrum for stabil...

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Veröffentlicht in:J. Opt. Soc. Am. B: Opt. Phys.; (United States) 1989-04, Vol.6 (4, Ap), p.539-549
Hauptverfasser: Rayman, M. D., Aminoff, C. G., Hall, J. L.
Format: Artikel
Sprache:eng
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Zusammenfassung:Based on an efficient broadband electrooptic modulator producing RF optical sidebands locked to a stable cavity, a tunable dye laser can be scanned under computer control with frequency-synthesizer precision. Cavity drift is suppressed in software by using a strong feature in the spectrum for stabilization. Mercury isotope shifts are measured with a reproducibility of about 50 kHz. This accuracy of about 1/300 of the linewidth illustrates the power of the technique. Derived hyperfine-structure constants are compared with previous atomic-beam data.
ISSN:0740-3224
1520-8540
DOI:10.1364/JOSAB.6.000539