Terahertz Three-Dimensional Imaging Based on Computed Tomography with Photonics-Based Noise Source

• 来源期刊: 中国物理快报（英文版）
• 关键词: @@
• 年，卷（期）: 2017,（8）
• 页码范围: 76-78
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/0256-307X/34/8/084206

摘要

Computed tomography has been proven to be useful for non-destructive inspection of structures and materials.We build a three-dimensional imaging system with the photonically generated incoherent noise source and the Schottky barrier diode detector in the terahertz frequency band (90-140 GHz).Based on the computed tomography technique,the three-dimensional image of a ceramic sample is reconstructed successfully by stacking the slices at different heights.The imaging results not only indicate the ability of terahertz wave in the noninvasive sensing and non-destructive inspection applications,but also prove the effectiveness and superiority of the uni-traveling-carrier photodiode as a terahertz source in the imaging applications.