Noise reduction in digital lensless holographic microscopy by engineering the light from a light-emitting diode

被引：50

作者：

Garcia-Sucerquia, Jorge ^{[1
]}

机构：

[1] Univ Nacl Colombia, Sch Phys, Medellin 3840 050034, Colombia

来源：

APPLIED OPTICS | 2013年 / 52卷 / 01期

关键词：

COHERENCE;

D O I：

10.1364/AO.52.00A232

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

By engineering the light from a light-emitting diode (LED) the noises present in digital lensless holographic microscopy (DLHM) are reduced. The partially coherent light from an LED is tailored to produce a spherical wavefront with limited coherence time and the spatial coherence needed by DLHM to work. DLHM with this engineered light source is used to image biological samples that cover areas of the order of mm(2). The ratio between the diameter of the area that is almost coherently illuminated to the diameter of the illumination area is utilized as parameter to quantify the performance of the DLHM with the engineered LED light source. Experimental results show that while the noises can be reduced effectively the spatial resolution can be kept in the micrometer range. (C) 2012 Optical Society of America

引用

页码：A232 / A239

页数：8

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