Fast three-dimensional terahertz computed tomography using real-time line projection of intense terahertz pulse

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

1 Institut of Technology and Science
2 LOMA - Laboratoire Ondes et Matière d'Aquitaine
3 Graduate School of Engineering Science [Toyonaka, Osaka]

We demonstrated fast three-dimensional transmission terahertz computed tomography by using real-time line projection of intense terahertz beam generated by optical rectification in lithium niobate crystal. After emphasizing the advantage of intense terahertz pulse generation for two-dimensional spatio-temporal terahertz imaging, peak-to-peak amplitudes of pulsed terahertz electric field have been used to obtain a series of projection images at different rotation angles. Then a standard reconstruction algorithm has been employed to perform final three-dimensional reconstruction. Test samples including a medicine capsule have been investigated with a total acquisition time to only 6 minutes.

Mots clés: (110.6795) Terahertz imaging; (110.6955) Tomographic imaging; (100.6890) Three-dimensional image processing; (320.7090) Ultrafast lasers

Domaines: Optique [physics.optics]

Mukesh Jewariya, Emmanuel Abraham, Takayuki Kitaguchi, Yoshiyuki Ohgi, Masa-Aki Minami, et al.. Fast three-dimensional terahertz computed tomography using real-time line projection of intense terahertz pulse. Optics Express, 2013, 21 (2), pp.2423-2433. ⟨10.1364/OE.21.002423⟩. ⟨hal-00781845⟩