Single pixel imaging with tunable terahertz parametric oscillator

被引：17
|
作者：
Duan, Pan [1 ,2 ]
Wang, Yuye [1 ,2 ,3 ]
Xu, Degang [1 ,2 ]
Yan, Chao [1 ,2 ]
Yang, Zhen [1 ,2 ]
Xu, Wentao [1 ,2 ]
Shi, Wei [1 ,2 ]
Yao, Jianquan [1 ,2 ]
机构：
[1] Tianjin Univ, Inst Laser & Optoelect, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Minist Educ, Key Lab Optoelect Informat Technol, Tianjin 300072, Peoples R China
[3] Third Mil Med Univ, Inst Neurosurg, Southwest Hosp, Chongqing 400038, Peoples R China
来源：
APPLIED OPTICS | 2016年 / 55卷 / 13期
基金：
中国国家自然科学基金;
关键词：
REAL-TIME;
D O I：
10.1364/AO.55.003670
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A method of active terahertz imaging based on compressive sampling is demonstrated. A metal mask structure is designed with all modulation matrices engraved on. The imaging approach based on the mask eliminates the need for imaging object movement in point-wise scanning and shows high sensitivity. A terahertz parametric oscillator with tunability from 0.5 to 2.7 THz was used as the light source. Holes with circular, rectangular, and letter "H" shapes were imaged at 1.75 THz at 20% sampling rate. The influence of sampling rates and averaging times on the image was analyzed. Imaging of the letter "H" at different frequencies from 1.0 to 2.2 THz was tested and evaluated, and recognizable results were obtained in the range of 1.4-2.0 THz. (C) 2016 Optical Society of America
引用
收藏
页码：3670 / 3675
页数：6
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