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Showing 1 to 11 of 11 for “"Quantum beats"”.
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Study of Wavepacket Dynamics in Rubidium Vapor by Means of Time-Frequency Analysis
… the pump-probe time delay, shows the presence of quantum beats between energy levels involved in the FWM process. The time-frequency analysis of that temporal UV/violet data is done by means of the short-time Fourier transform that leads to retrieval of the temporal evolution of amplitude and …
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Investigations of intramolecular dynamics by picosecond time-resolved spectroscopy
… stationary behavior at low state densities, quantum beating at intermediate densities, and fast decays at high state densities. A companion technique, called time resolved stimulated emission pumping (TRSEP), is used to obtain decays for three of the 19 vibronic levels in p-cyclohexylaniline. …
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Probing weakly bound long-range Rydberg molecules by quantum beating experiments in rubidium vapor
… with low angular momentum and very low principal quantum numbers (7$s$, 8$s$, 5$d$, 6$d$) are observed in a quantum beating experiment for the first time. The experiments are conducted using parametric four-wave mixing (PFWM) in a pump-probe fashion. Fourier analysis of the time-domain data yields …
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Ultrafast Atomic Dynamics in Arbitrary Light Fields
… observations concerning orbital alignment and quantum beats in C, Si and Ge atoms, produced by strong-field detachment from their anions. We confirm a fundamental criterion for coherent spin-orbit wavepacket generation in this process, and demonstrate that its violation may account for the …
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Quantum beat observations in rubidium vapor
… within the atom that persist longer than 150 ps. Quantum beats due to the interference between the 7S and 5D_{5/2} energy states were observed by a four-wave mixing process. The difference frequency between the 5D–5P_{3/2} and the 5P_{3/2}–5S transitions was also observed for interpulse delays up …
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Quantum Beat Spectroscopy and Radiationless Transitions
… single rovibraonic transitions and observed quantum beats in the reversible intersystem crossing of these simple (alpha)-dicarbonyls. We have analyzed the beats by two methods to obtain information concerning the density of interacting states and the average intramolecular coupling energies. …
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ELECTRIC FIELD IONIZATION OF SODIUM RYDBERG ATOMS
… features with the appropriate (VBAR)m(,l)(VBAR) quantum numbers. A much better understanding of the laser excitation process, the Rydberg state production, and the response of the excited state to an increasing electric field has enabled measurement of some Rydberg fine-structure intervals, …
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Zeitaufgelöste EPR-Untersuchungen zur Struktur und Dynamik von Radikalpaar-Intermediaten in photosynthetischen Reaktionszentren und Modellsystemen
Die Arbeit berichtet über zeitaufgelöste EPR-Untersuchungen an den Radikalpaar-Intermediaten der Photosynthese. Untersucht werden das sekundäre Radikalpaar P865+QA- im photosynthetischen Reaktionszentrum des Purpurbakteriums Rhodobacter sphaeroides, das sekundäre Radikalpaar P700+A1- im Photosystem …
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Interference between coherences established among the 5D5/2-5P3/2 and 5P3/2-5S1/2 energy levels within atomic rubidium
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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Quantum beating of rubidium: Interference between atomic coherences and long range atom-atom interactions
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01
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Dynamics of interfering wave packets in rubidium by high resolution quantum beat spectroscopy
High resolution quantum beat spectroscopy has been realized to study atomic wave packet dynamics. Wave packets comprising pairs of low quantum number (n = 5 - 8) electronic states were formed in Rb vapor with ultrafast laser pulses, and their dynamics was observed by an all-optical technique of …