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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Spatial periodicity enhanced superradiance from an optically dense two-level medium
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Spatial periodicity enhanced superradiance from an optically dense two-level medium

机译：空间周期性增强了光密两能介质的超辐射

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摘要

We show that, in an optically dense medium having an inverted active atom number density periodically distributed in space, it is possible, in a slab configuration, to enhance the forward-backward symmetric superradiance emission efficiency if the periodicity reciprocal lattice vector obeys a Bragg's-like condition for coupling the forward and backward components of the active atoms polarization. We also show that the burst of superradiant light is emitted, in this case, at an earlier time than that for a homogeneously distributed medium having the same average atomic number density. Furthermore, this burst's temporal duration is shown to be substantially shorter than that for the homogeneous active atoms distribution.
机译：我们表明，在周期性地分布在空间中的，具有反转的活性原子序数密度的光致密性介质中，如果周期性的倒易晶格矢量服从布拉格定律，则可以以平板构造提高前后对称的超辐射发射效率。耦合活性原子极化的正向和反向成分的条件。我们还表明，在这种情况下，与具有相同平均原子序数密度的均匀分布的介质相比，发出的超辐射光更早。此外，该猝发的时间持续时间显着小于均质活性原子分布的持续时间。

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