Synthetic aperture in terahertz in-line digital holography for resolution enhancement

被引：47

作者：

Huang, Haochong ^{[1
,2
,3
]}

Rong, Lu ^{[1
,2
]}

Wang, Dayong ^{[1
,2
]}

Li, Weihua ^{[3
]}

Deng, Qinghua ^{[3
]}

Li, Bin ^{[1
,2
]}

Wang, Yunxin ^{[1
,2
]}

Zhan, Zhiqiang ^{[3
]}

Wang, Xuemin ^{[3
]}

Wu, Weidong ^{[3
]}

机构：

[1] Beijing Univ Technol, Coll Appl Sci, 100 Pingleyuan Rd, Beijing 100124, Peoples R China

[2] Beijing Univ Technol, Beijing Engn Res Ctr Precis Measurement & Control, 100 Pingleyuan Rd, Beijing 100124, Peoples R China

[3] CAEP, Res Ctr Laser Fus, Mianyang 621900, Sichuan, Peoples R China

来源：

APPLIED OPTICS | 2016年 / 55卷 / 03期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

RECONSTRUCTION; TOMOGRAPHY; AMPLITUDE; OBJECTS; TISSUE; FIELD;

D O I：

10.1364/AO.55.000A43

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Terahertz digital holography is a combination of terahertz technology and digital holography. In digital holography, the imaging resolution is the key parameter in determining the detailed quality of a reconstructed wavefront. In this paper, the synthetic aperture method is used in terahertz digital holography and the in-line arrangement is built to perform the detection. The resolved capability of previous terahertz digital holographic systems restricts this technique to meet the requirement of practical detection. In contrast, the experimental resolved power of the present method can reach 125 mu m, which is the best resolution of terahertz digital holography to date. Furthermore, the basic detection of a biological specimen is conducted to show the practical application. In all, the results of the proposed method demonstrate the enhancement of experimental imaging resolution and that the amplitude and phase distributions of the fine structure of samples can be reconstructed by using terahertz digital holography. (C) 2015 Optical Society of America

引用

页码：A43 / A48

页数：6

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