Abstract:We have extended the in-flight Lamb-dip technique of Dufay et al. [Phys. Rev. Lett. 37, 1678(1976] by adding a radiofrequency magnetic resonance region. This method allows sub-Doppler measurements of frequency intervals between optical transitions that have no level in common. We have used the method to measure the separation of the Ee and P Ee spectral lines in the P P n à -f P P n } (0,1) band of h N n P to be feE cm 3 . This represents an increase in accuracy by more than an order of magnitude over previou… Show more
“…The spin-rotation and hyperfine structure of the ground electronic state can be measured directly using laser-rf double resonance (6) or (12). A combination of these two techniques that we recently introduced allows sub-Doppler measurements of frequency intervals between transitions that have no level in common (13). In the current work we use the presence of satellite lines to break the correlation; e.g., two lines having the same upper (lower) state can determine directly the hyperfine splitting in the lower (upper) state.…”
“…The spin-rotation and hyperfine structure of the ground electronic state can be measured directly using laser-rf double resonance (6) or (12). A combination of these two techniques that we recently introduced allows sub-Doppler measurements of frequency intervals between transitions that have no level in common (13). In the current work we use the presence of satellite lines to break the correlation; e.g., two lines having the same upper (lower) state can determine directly the hyperfine splitting in the lower (upper) state.…”
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