Coherent flash of light emitted by a cold atomic cloud
Coherent flash of light emitted by a cold atomic cloud
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冷原子云发出的相干闪光
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
D. Wilkowski
中科院分区：
文献类型：
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作者：
M. Chalony;R. Pierrat;D. Delande;D. Wilkowski
当发射到光学厚度的冷原子云上的共振激光突然关闭时，向前方向发射出一束相干光。这种瞬态现象是由于原子散射体的高共振特性而观察到的。我们定量地分析了它的时间特性，结果与理论预测非常吻合。基于互补实验，在不使用干涉工具的情况下重建了相干场的相位。
When a resonant laser sent on an optically thick cold atomic cloud is abruptly switched off, a coherent flash of light is emitted in the forward direction. This transient phenomenon is observed due to the highly resonant character of the atomic scatterers. We analyze quantitatively its temporal properties and show very good agreement with theoretical predictions. Based on complementary experiments, the phase of the coherent field is reconstructed without interferometric tools.