Peering into darkness with a vortex spatial filter

被引：189

作者：

Swartzlander, GA ^{[1
]}

机构：

[1] Worcester Polytech Inst, Dept Phys, Worcester, MA 01609 USA

来源：

OPTICS LETTERS | 2001年 / 26卷 / 08期

关键词：

Spatial filters;

D O I：

10.1364/OL.26.000497

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

I propose to use as a window the dark core of an optical vortex to examine a weak background signal hidden in the glare of a bright coherent source. Applications such as the detection of an astronomical object, forward-scattered radiation, and incoherent light are described whereby signal enhancements of at least 7 orders of magnitude may be achieved. (C) 2001 Optical Society of America.

引用

页码：497 / 499

页数：3

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