'Viewing' objects hidden in highly scattering media by cross-correlating the Fourier transform of the image with the incident field in a second-order non-linear crystal

被引：4

作者：

Andreoni, A

Bondani, M

Pontenza, MAC

Villani, F

机构：

[1] Univ Insubria, Dipartimento Sci Chim Fis & Matemat, I-22100 Como, Italy

[2] Univ Milan, Ist Nazl Fis Mat, I-20133 Milan, Italy

[3] Univ Naples Federico II, INFM, I-80131 Naples, Italy

来源：

OPTICS COMMUNICATIONS | 2000年 / 174卷 / 5-6期

关键词：

frequency conversion; optical cross-correlation; optical imaging/mapping; electromagnetic scattering by random media;

D O I：

10.1016/S0030-4018(99)00724-5

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The detectability of the image of an object immersed in a scattering medium and transilluminated by a multi-mode laser pulse can be enhanced by cross-correlating the transmitted field with a fraction of the incident one in a beta-barium berate crystal. We show that this effect arises from the interplay of the temporal coherence properties of the interacting fields, even in the presence of a modest coherence such as that of a Q-switched Nd:YAG laser pulse. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：487 / 497

页数：11

共 14 条

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