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理论上证明了由于探测光场自身诱导的原子相干的作用,即使没有外加相干条件,非简并Λ型介质同样能够在零吸收点产生大折射率In this paper we show that nondegenerate Λ three-level medium without external coherent driving can produce a large index of refraction at a point of vanishing absorption via the atomic coherence which is induced by the probe field itself.
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