Homodyne and heterodyne imaging through a scattering medium

被引：10
作者：
Khoury, J [1 ]
Kane, JS
Gianino, PD
Hemmer, PL
Woods, CL
机构：
[1] Lartec Inc, Sudbury, MA 01776 USA
[2] AF Res Lab, SNHC, Hanscomb AFB, Bedford, MA 01731 USA
[3] Tufts Univ, Medford, MA 02155 USA
来源：
OPTICS LETTERS | 2001年 / 26卷 / 18期
关键词：
D O I：
10.1364/OL.26.001433
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We introduce a novel two-dimensional (2D) homodyne and heterodyne technique for imaging objects through or embedded in a scattering medium. Our imaging approach is based on heterodyning of light with different Doppler broadenings that is scattered from objects of two different textures or from an opaque object and a textured scattering medium. We report on the initial demonstration of pulling signals out of noise for an object hidden behind a scattering medium. Enhancements of signal-to-noise ratio of the order of 50 have been achieved by use of a 2D holographic phase-sensitive detector. We also discuss the experimental feasibility of this approach for objects embedded in a scattering medium. (C) 2001 Optical Society of America.
引用
收藏
页码：1433 / 1435
页数：3
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