CONSERVATION-LAWS FOR PARTIALLY COHERENT FREE FIELDS

被引：9

作者：

KOWARZ, MW ^{[1
]}

WOLF, E ^{[1
]}

机构：

[1] UNIV ROCHESTER, DEPT PHYS & ASTRON, ROCHESTER, NY 14627 USA

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1993年 / 10卷 / 01期

关键词：

D O I：

10.1364/JOSAA.10.000088

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Very good approximations to many optical fields are provided by free fields, i.e., fields that do not contain any evanescent waves. New conservation laws are derived for partially coherent fields of this kind, propagating into a half-space. It is found that the cross-spectral density, integrated over either the average or the difference of spatial coordinates in any cross section of the field, is invariant on propagation. It is also shown that, as a consequence of these conservation laws, both the spectrum and the so-called antispectrum of the field, integrated over cross-sectional planes, are conserved. The new conservation laws are illustrated by application to Gaussian Schell-model beams.

引用

页码：88 / 94

页数：7

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