We introduce a class of partially coherent, Schell-type sources whose degree of coherence is represented by a finite series of complex-valued functions. The significance of implementing such a series is due to the fact that one can manipulate the weighting coefficients of its terms having a computationally trivial linear phase of the degree of coherence for obtaining the radiated beams of the same complexity as could only be previously achieved with analytically intractable nonlinear phases. Our examples illustrate new opportunities for modeling asymmetric coherence gratings and lattices.

中文翻译：

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非对称相干光栅

我们介绍了一类部分相干的Schell类型源，其相干程度由一系列有限的复数值函数表示。实现这样一个序列的重要性是由于这样一个事实，即一个人可以操纵其项的加权系数，这些项具有相干度的计算上很简单的线性相位，以获得与以前只能通过解析获得的相同复杂度的辐射束。棘手的非线性阶段。我们的示例说明了对非对称相干光栅和晶格建模的新机会。