Resonant quenching of gas-phase Cs atoms induced by surface polaritons
Near-field coupling between an excited atom and a surface-polariton mode can dramatically modify atomic branching ratios, because of surface-induced enhancement of a resonant decay channel. We show here that Cs(6D(3/2)) transfer towards Cs(7P(1/2)) (at lambda = 12.15 microm), negligible in free spac...
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Veröffentlicht in: | Physical review letters 2002-06, Vol.88 (24), p.243603-243603, Article 243603 |
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creator | Failache, Horacio Saltiel, Solomon Fischer, Alexis Bloch, Daniel Ducloy, Martial |
description | Near-field coupling between an excited atom and a surface-polariton mode can dramatically modify atomic branching ratios, because of surface-induced enhancement of a resonant decay channel. We show here that Cs(6D(3/2)) transfer towards Cs(7P(1/2)) (at lambda = 12.15 microm), negligible in free space, becomes efficient in the vicinity (< or =100 nm) of a sapphire window, due to a 12 microm resonance in the surface-polariton modes. The experiment relies on a selective reflection probing on the 7P(1/2)-10D(3/2) transition. |
doi_str_mv | 10.1103/PhysRevLett.88.243603 |
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title | Resonant quenching of gas-phase Cs atoms induced by surface polaritons |
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