Compressed sensing pulse-echo mode terahertz reflectance tomography.
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.
Jin
Kyung Hwan
KH
Department of Bio and Brain Engineering, KAIST, 335 Gwahak-ro, Yuseong-gu, Daejeon 305-701, Korea.
Kim
Youngchan
Y
Yee
Dae-Su
DS
Lee
Ok Kyun
OK
Ye
Jong Chul
JC
D017076:Computer-Aided Design; D044962:Data Compression; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007089:Image Enhancement / Q000295:instrumentation*; D007090:Image Interpretation, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D055069:Terahertz Imaging / Q000295:instrumentation* / Q000379:methods; D041623:Tomography, Optical Coherence / Q000295:instrumentation* / Q000379:methods