6. TERAHERTZ QUASI-OPTICS

TERAHERTZ TOMOGRAPHY OF LOW CONTRAST OBJECTS: ALGORITHMS AND EXPERIMENTAL MEASUREMENTS

Valeriy V. Pickalov
1. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS Novosibirsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
pickalov@itam.nsc.ru
Aleksandr L. Balandin
1. Matrosov Institute for System Dynamics and Control Theory of SB RAS Irkutsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
balandin@icc.ru
Dmitriy G. Rodionov
1. Novosibirsk State University Novosibirsk, Russian Federation
2. Novosibirsk State Technical University Novosibirsk, Russian Federation
The material was received by the Editorial Board: 02.09.2010
In this paper numerical modeling of tomography projections measurements is done and the iterative algorithm of diffraction tomography is developed for reconstruction of images of objects. Generalization of one of the most perspective algorithms of iterative type, – algorithm Gerchberg-Papoulis (G-P), from ray tomography to diffraction tomography, is evolved. Experimental methods of tomographical projections acquisition in a THz range are constructed.

Keywords:
terahertz tomography, iterative algorithms, Gerchberg-Papoulis method, diffraction tomography, inverse problems, Born-Rytov approximations, Helmholtz equation, mathematical modeling. 
УДК 535.7

TERAHERTZ TOMOGRAPHY OF LOW CONTRAST OBJECTS: ALGORITHMS AND EXPERIMENTAL MEASUREMENTS
References: Pickalov V. V., Balandin A. L., Rodionov D. G., Vlasenko M. G., Knyazev B. A. TERAHERTZ TOMOGRAPHY OF LOW CONTRAST OBJECTS: ALGORITHMS AND EXPERIMENTAL MEASUREMENTS. Vestnik NSU. Series: Physics. 2010, vol. 5, no. 4. P. 91–97 (in Russ.). DOI: 10.54362/1818-7919-2010-5-4-91-97