Observation reveals quantum beats in superfluorescent emission from argon, suggesting new insights into laser interactions.
Observation of quantum beats in lasing signals in argon atoms pumped by a 3-photon resonance with an intense 260.5 nm laser were used to observe excitation of a “3ω-induced” state mediated by phase-matched third-harmonic photons.
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Nambu et al. (2025) studied this question.
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