Isolated-target terahertz hologram reconstruction using phase retrieval algorithm

Terahertz Inline digital holography, having the advantages of digital holography and terahertz band, promises itself a broad future in fields such as biomedical and material examination. Holograms of the two isolated targets are reconstructed under phase retrieval condition - either amplitude restricted only or amplitude & phase restricted. Results are compared and analyzed. Moreover, imaging experiments with shelters are also conducted. Reconstruction results show that, under amplitude & phase restricted, targets covered by a piece of B5 paper can be well distinguished.