[8p-PA2-1~25] 3.8 Terahertz technologies

[8p-PA2-15] Study of THz-CT System Using Resonant Tunneling Diodes as Light Sources and Detectors

〇(M1)Noritomo Takahashi¹, Tomofumi Ikari¹ (1.Nihon Univ.)

Keywords:

Resonant Tunneling Diode,Computed Tomography

Tomographic imaging using terahertz (THz) light holds great promise for inspecting optically opaque materials by leveraging the high penetration of THz waves. However, conventional THz-pulse methods still face practical challenges, including bulky setups and limited measurable thickness due to inherent theoretical constraints. Furthermore, Filtered Back Projection (FBP), a standard image reconstruction method in Computed Tomography (CT), struggles to account for physical phenomena such as refraction and reflection. To address these issues, we aim to develop an RTD-based CT system utilizing the Conjugate Gradient Least Squares (CGLS) iterative algorithm. This report describes our investigation into this system.