TY - JOUR T1 - Terahertz pulse imaging in reflection geometry TT - تصویربرداری پالسی تراهرتز در مد بازتابی JF - opsi JO - opsi VL - 23 IS - 0 UR - http://opsi.ir/article-1-1157-en.html Y1 - 2017 SP - 749 EP - 752 KW - Terahertz KW - Reflection Geometry KW - Imaging KW - Photoconductive Antenna. N2 - In this paper, a THz pulse imaging system in reflection geometry has been designed and established by using photoconductive antennas and images of two samples were captured in two methods. At the first method the arrival time of THz peak pulse and in the second one the peak intensity of reflected power was recorded for each pixel of object. To improve imaging quality, an aperture was putted in front of the object and the resolution of the captured images was increased. M3 ER -