超材料中的散射子损耗补偿
Loss compensation by spasers in metamaterials
摘要：
我们表明，精确的损耗补偿可以实现在有源超材料包含spasers泵浦在很宽的范围内的泵浦值低于和高于spasing阈值。我们表明，低于和高于spasing阈值的spaser操作之间的差异消失，当spaser是由一个外部场同步。当抽运阈值失去意义时，一个新的抽运阈值--损失补偿阈值就产生了。低于该阈值（小于Spasing阈值），在任何外场频率下都不可能进行补偿。
英文摘要：
We show that exact loss compensation can be achieved in active metamaterials containing spasers pumped over a wide range of pumping values both below and above the spasing threshold. We demonstrate that the difference between spaser operation below and above spasing threshold vanishes, when the spaser is synchronized by an external field. As the spasing threshold loses its significance, a new pumping threshold, the threshold of loss compensation, arises. Below this threshold, which is smaller than the spasing threshold, compensation is impossible at any frequency of the external field.
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