Real-time line projection for fast terahertz spectral computed tomography

Emmanuel Abraham (1) , Yoshiyuki Ohgi (2) , Masa-Aki Minami (2) , Mukesh Jewariya (3) , Masaya Nagai (2) , Tsutomu Araki (2) , Takeshi Yasui (2, 4)

1 LOMA - Laboratoire Ondes et Matière d'Aquitaine
2 Graduate School of Engineering Science [Toyonaka, Osaka]
3 Renovation center of instruments for science education and technology
4 Institut of technology and science

We demonstrated fast terahertz spectral computed tomography by using real-time line projection of a terahertz beam. Two types of cross-sectional images of continuously rotating samples have been measured in only a few seconds. From temporal data, a peak-to-peak sinogram and cross sections have been reconstructed using a filtered backprojection algorithm. Using fast Fourier transform from temporal data, spectral cross sections of the sample have been obtained.

Domaines: Optique [physics.optics]

Emmanuel Abraham, Yoshiyuki Ohgi, Masa-Aki Minami, Mukesh Jewariya, Masaya Nagai, et al.. Real-time line projection for fast terahertz spectral computed tomography. Optics Letters, 2011, 36 (11), pp.2119-2121. ⟨10.1364/OL.36.002119⟩. ⟨hal-00608296⟩