Title :
THz 3D imaging with phase-shifting interferometry
Author :
Otani, C. ; Sasaki, Yutaka ; Yuasa, Takeshi ; Suga, Mikio ; Kasuga, H. ; Ohmori, Hiromitsu
Author_Institution :
Terahertz Sensing & Imaging Team, RIKEN, Sendai, Japan
fDate :
June 30 2013-July 4 2013
Abstract :
We have performed two kinds of terahertz (THz) 3D imaging with a continuous-wave (CW) source and phase-shifting interferometry. In the first one, THz computed tomography (CT), the phase information has been utilized to reconstruct the CT image instead of utilizing the line-of-sight absorption. We show that the method minimized the artificial effect due to the reflection or diffraction at the structural boundaries. The second, the depth imaging, has utilized the phase information for imaging the surface features of reflecting materials.
Keywords :
computerised tomography; image reconstruction; phase shifting interferometry; terahertz wave imaging; CT image; CW source; THz 3D imaging; THz computed tomography; artificial effect; continuous-wave source; diffraction; image reconstruction; line-of-sight absorption; phase information; phase shifting interferometry; reflection; structural boundaries; Computed tomography; Interferometers; Mirrors; Optical interferometry; Optical surface waves; Optimized production technology;
Conference_Titel :
Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2013 Conference on
Conference_Location :
Kyoto
DOI :
10.1109/CLEOPR.2013.6600105
