压缩感知脉冲回波太赫兹反射层析成像。

Compressed sensing pulse-echo mode terahertz reflectance tomography.

机构信息

Department of Bio and Brain Engineering, KAIST, 335 Gwahak-ro, Yuseong-gu, Daejeon 305-701, Korea.

出版信息

Opt Lett. 2009 Dec 15;34(24):3863-5. doi: 10.1364/OL.34.003863.

DOI:10.1364/OL.34.003863

PMID:20016639

Abstract

We demonstrate pulse-echo mode terahertz (THz) reflectance tomography, where scattered THz waveforms are measured using a high-resolution asynchronous-optical-sampling THz time domain spectroscopy (AOS THz-TDS) technique, and 3-D tomographic reconstruction is accomplished using a compressed sensing approach. One of the main advantages of the proposed system is a significant reduction of acquisition time without sacrificing the reconstruction quality, thanks to the sufficient incoherency in the pulse-echo mode-sensing matrix and the fast sampling scheme in AOS THz-TDS.

摘要

我们展示了脉冲回波模式太赫兹（THz）反射层析成像，其中使用高分辨率的非同步光学采样太赫兹时域光谱（AOS THz-TDS）技术测量散射的 THz 波形，并使用压缩感知方法完成 3-D 层析重建。所提出的系统的主要优点之一是，由于在脉冲回波模式传感矩阵中存在充分的非相干性以及 AOS THz-TDS 中的快速采样方案，在不牺牲重建质量的情况下，大大减少了采集时间。