Short-coherence digital microscopy by use of a lensless holographic imaging system

被引：148

作者：

Pedrini, G ^{[1
]}

Tiziani, HJ ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Tech Opt, D-70569 Stuttgart, Germany

来源：

APPLIED OPTICS | 2002年 / 41卷 / 22期

关键词：

D O I：

10.1364/AO.41.004489

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An optical system based on short-coherence digital holography suitable for three-dimensional (3D) microscopic investigations is described. The light source is a short-coherence laser, and the holograms are recorded on a CCD sensor. The interference (hologram) occurs only when the path lengths of the reference and the object beam are matched within the coherence length of the laser. The image of the part of the sample that matches the reference beam is reconstructed by numerical evaluation of the hologram. The advantages of the method are high numerical aperture (this means high spatial resolution), detection of the 3D shape, and a lensless imaging system. Experimental results are presented. (C) 2002 Optical Society of America.

引用

页码：4489 / 4496

页数：8

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