Two Inverse Problems in Spectroscopy with Partially Coherent Sources and theScaling Law

摘要

Two formulae are derived which make it possible to determine the normalizedsource spectrum and the degree of spectral coherence of any planar, secondary, quasi-homogeneous source of a certain class, from the knowledge of the far-zone spectrum of the radiated field. The results are illustrated by computed curves. The new inversion formulas are also used to derive a generalized version of a scaling law (1986, Phys. Rev Lett., 56, 1370) for the invariance of the normalized spectrum, of light on propagation in free space. Spectroscopy of partially coherent sources, Inverse problems in spectroscopy, Spectroscopic scaling law.