Research output: Contribution to journal › Article
Effect of Photoions on the Line Shape of the Förster Resonance Lines and Microwave Transitions in Cold Rubidium Rydberg Atoms. / Tretyakov, D.B.; Beterov, I.I.; Entin, V.M.; Yakshina, E. A.; Ryabtsev, I.I.; Dyubko, S.F.; Alekseev, E.A.; Pogrebnya, N.L.; Bezuglov, N.N.; Arimondo, E.
In: Journal of Experimental and Theoretical Physics, Vol. 114, No. 1, 2012, p. 14-24.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Effect of Photoions on the Line Shape of the Förster Resonance Lines and Microwave Transitions in Cold Rubidium Rydberg Atoms
AU - Tretyakov, D.B.
AU - Beterov, I.I.
AU - Entin, V.M.
AU - Yakshina, E. A.
AU - Ryabtsev, I.I.
AU - Dyubko, S.F.
AU - Alekseev, E.A.
AU - Pogrebnya, N.L.
AU - Bezuglov, N.N.
AU - Arimondo, E.
PY - 2012
Y1 - 2012
N2 - Experiments are carried out on the spectroscopy of the Förster resonance lines Rb(37P) + Rb(37P) → Rb(37S) + Rb(38S) and microwave transitions nP → n′S, n′D between Rydberg states of cold rubidium atoms in a magneto-optical trap (MOT). Under ordinary conditions, all spectra exhibit a linewidth of 2–3 MHz irrespective of the interaction time between atoms or between atoms and microwave radiation, although the limit resonance width should be determined by the inverse interaction time. The analysis of experimental conditions has shown that the main source of line broadening is the inhomogeneous electric field of cold photoions that are generated under the excitation of initial nP Rydberg states by broadband pulsed laser radiation. The application of an additional electric-field pulse that rapidly extracts photoions produced by a laser pulse leads to a considerable narrowing of lines of microwave resonances and the Förster resonance. Various sources of line broadening in cold Rydberg atoms are analyzed.
AB - Experiments are carried out on the spectroscopy of the Förster resonance lines Rb(37P) + Rb(37P) → Rb(37S) + Rb(38S) and microwave transitions nP → n′S, n′D between Rydberg states of cold rubidium atoms in a magneto-optical trap (MOT). Under ordinary conditions, all spectra exhibit a linewidth of 2–3 MHz irrespective of the interaction time between atoms or between atoms and microwave radiation, although the limit resonance width should be determined by the inverse interaction time. The analysis of experimental conditions has shown that the main source of line broadening is the inhomogeneous electric field of cold photoions that are generated under the excitation of initial nP Rydberg states by broadband pulsed laser radiation. The application of an additional electric-field pulse that rapidly extracts photoions produced by a laser pulse leads to a considerable narrowing of lines of microwave resonances and the Förster resonance. Various sources of line broadening in cold Rydberg atoms are analyzed.
KW - cold matter
KW - photoionization
KW - Förster resonance
KW - cold plasma
U2 - 10.1134/S1063776111160102
DO - 10.1134/S1063776111160102
M3 - Article
VL - 114
SP - 14
EP - 24
JO - Journal of Experimental and Theoretical Physics
JF - Journal of Experimental and Theoretical Physics
SN - 1063-7761
IS - 1
ER -
ID: 5354273