2020
DOI: 10.1103/physreva.101.052507
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Inverted-ladder-type optical excitation of potassium Rydberg states with hot and cold ensembles

Abstract: We present experimental results on the sub-Doppler Rydberg spectroscopy of potassium in a hot cell and cold atoms, using two counterpropagating laser beams of 405 and 980 nm as an inverted ladder-type excitation configuration (4S 1/2-5P 3/2-nS 1/2 and nD 3/2,5/2). Such an inverted ladder-type scheme is predicted to be without the sub-Doppler electromagnetically induced transparency feature in a thermal ensemble under the weak-probe approximation. Instead, we utilize a strong probe field and successfully observ… Show more

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Cited by 5 publications
(4 citation statements)
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“…Compared to other experimentally measured energies of 39 K Rydberg states (Table I), ours agree with recent results from Ref. [26] within uncertainties, except for 68S.…”
Section: Resultssupporting
confidence: 91%
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“…Compared to other experimentally measured energies of 39 K Rydberg states (Table I), ours agree with recent results from Ref. [26] within uncertainties, except for 68S.…”
Section: Resultssupporting
confidence: 91%
“…Notwithstanding this, our ionization energies and δ 0 agree with results derived using similar methods in Refs. [23,25,26,38].…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Therefore, creating the Rydberg states in an atomic beam requires finding the energy difference between the 39 K ground state and the desired Rydberg state, and then finding the laser frequency that corresponds to that energy difference. However, the literature was sparse in identifying Rydberg states in 39 K with n > 50, [43][44][45][46] so we needed to find the energy spectrum of n ∼ 50 − 90 ourselves. Additionally, simulations show that the approximate wavelength required to get 39 K to these Rydberg levels is 286 nm, 47 which is in the ultraviolet range.…”
Section: Rydberg Spectroscopymentioning
confidence: 99%