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| 2.52THz离轴数字全息成像和焦平面成像特性比较 | |
| 引用本文： | 李琦,丁胜晖,李运达,王骐.2.52THz离轴数字全息成像和焦平面成像特性比较[J].中国激光,2012,39(9):909003-182. |
| 作者姓名： | 李琦 丁胜晖 李运达 王骐 |
| 作者单位： | 李琦:哈尔滨工业大学可调谐激光技术国家级重点实验室， 黑龙江 哈尔滨 150081 丁胜晖:哈尔滨工业大学可调谐激光技术国家级重点实验室， 黑龙江 哈尔滨 150081 李运达:哈尔滨工业大学可调谐激光技术国家级重点实验室， 黑龙江 哈尔滨 150081 王骐:哈尔滨工业大学可调谐激光技术国家级重点实验室， 黑龙江 哈尔滨 150081 |
| 基金项目： | 高等学校博士学科点专项科研基金(20112302110028)资助课题。 |
| 摘 要： | 利用已搭建的2.52THz焦平面成像装置和离轴数字全息装置,通过分辨率测量和水印及铅笔字成像,研究了焦平面成像和离轴数字全息成像这两种面阵成像的性能。实验证明,常规的焦平面成像由于太赫兹波长较长,很难获得较高的成像分辨率,且成像效果受放置位置的影响严重;太赫兹离轴数字全息成像可以提高成像分辨率,但成像物体大小受系统分辨率制约;焦平面成像较离轴面阵数字全息成像更适于大目标低分辨率成像。 |
| 关 键 词： | 成像系统 太赫兹成像 数字全息 焦平面成像 |
| 收稿时间： | 2012/5/14 |
Comparison between 2.52 THz Off-Axis Digital Holography and Focal-Plane Imaging |
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| Li Qi Ding Shenghui Li Yunda Wang Qi.Comparison between 2.52 THz Off-Axis Digital Holography and Focal-Plane Imaging[J].Chinese Journal of Lasers,2012,39(9):909003-182. | |
| Authors: | Li Qi Ding Shenghui Li Yunda Wang Qi |
| Affiliation: | Li Qi Ding Shenghui Li Yunda Wang Qi(National Key Laboratory of Science and Technology on Tunable Laser,Harbin Institute of Technology, Harbin,Heilongjiang 150081,China) |
| Abstract: | Performance of focal-plane imaging and off-axis digital holography is studied by the way of the resolution measurement and imaging of watermark and words in pencil with the built 2.52 THz focal-plane imaging and off-axis digital holographic devices. The results validate that the common focal-plane imaging can not achieve relatively high resolution because of the long wavelength of terahertz. The imaging quality is determined by the placed position. Terahertz off-axis digital hologram can improve the resolution of the imaging system; however, the imaging object size is limited by the system resolution. It can be inferred that the focal-plane imaging is more suitable for large object and low resolution imaging. |
| Keywords: | imaging systems terahertz imaging digital holography focal-plane imaging |
| 本文献已被 CNKI 等数据库收录！ | |
