论文标题
微腔激光器中定向排放的熵测量
Entropic measure of directional emissions in microcavity lasers
论文作者
论文摘要
我们提出了微腔激光器中定向发射的贵族概念。首先，极坐标中远场轮廓的香农熵可以量化发射的单向性程度，而对单向性的先前概念则无法在稳健范围内有效地测量与变形参数的变化。其次，定向发射的发散角在最大最大的全宽度上在现象学上是定义的，并且几乎不适用于复杂的峰结构。然而，笛卡尔坐标中远场剖面的半边缘概率的香农熵可以呈现等效的结果，此外，它甚至适用于具有复杂峰结构的情况。
We propose a noble notion of the directional emission in microcavity lasers. First, Shannon entropy of the far-field profiles in the polar coordinate can quantify the degree of unidirectionality of the emission, while previous notions about the unidirectionality can not efficiently measure in the robust range against a variation of the deformation parameter. Second, a divergence angle of the directional emission is defined phenomenologically in terms of full width at half maximum, and it is barely applicable to a complicated peak structure. However, Shannon entropy of semi-marginal probability of the far-field profiles in the cartesian coordinate can present equivalent results, and moreover it is applicable to even the cases with a complicated peak structure of the emission.
