Modeling of a multireflector terahertz imaging system using a geometrical optics model based on angular spectrum theory.
Opt Express
; 31(11): 17226-17234, 2023 May 22.
Article
em En
| MEDLINE
| ID: mdl-37381462
ABSTRACT
We propose a simulation method for a multireflector terahertz imaging system. The description and verification of the method are based on an existing active bifocal terahertz imaging system at 0.22 THz. Using the phase conversion factor and angular spectrum propagation, the computation of the incident and received fields requires only a simple matrix operation. The phase angle is used to calculate the ray tracking direction, and the total optical path is used to calculate the scattering field of defective foams. Compared with the measurements and simulations of aluminum disks and defective foams, the validity of the simulation method is confirmed in the field of view of 50â
cm × 90â
cm at 8 m. This work aims to develop better imaging systems by predicting their imaging behavior for different targets before manufacturing.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Opt Express
Ano de publicação:
2023
Tipo de documento:
Article