Phase control of fluorescence quenching and line narrowing

The resonance fluorescence from a three-level Lambda atom is studied, in which each optical transition is driven by a coherent field and the metastable states are coupled to each other via a microwave field. It is shown that the fluorescence depends not only on the relative intensities of the coupli...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2008-02, Vol.41 (3), p.035503-035503 (5)
Main Authors: Xu, Qing, Hu, Xiang-ming, Yin, Jian-wu
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Atomic properties and interactions with photons
Exact sciences and technology
Fluorescence, phosphorescence (including quenching)
Fundamental areas of phenomenology (including applications)
Optics
Physics
Quantum description of interaction of light and matter
related experiments
Quantum optics
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Summary:The resonance fluorescence from a three-level Lambda atom is studied, in which each optical transition is driven by a coherent field and the metastable states are coupled to each other via a microwave field. It is shown that the fluorescence depends not only on the relative intensities of the coupling fields but also on the relative phase delay between the envelopes of the amplitudes of the three fields. For the case of equal intensity of the two coherent fields, the fluorescence is completely inhibited once the phase delay is set to be 0 or pi, while the fluorescence emerges once the phase delay is changed to pi/2; moreover, the fluorescence spectrum ultimately reverts to an ultranarrow triplet by decreasing the relative intensity of the coherent field to the microwave field.
ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/41/3/035503