Fundamental specifications of reconstruction in terahertz pulsed time-domain holography

This work is a detailed study of the hologram reconstruction quality in pulsed terahertz time-domain holography. It was performed with both single wavelength and broadband spectrum. The study presents the dependences of the transverse and longitudinal spatial resolution, as well as the reconstruction contrast on the solid angle at which the hologram is observed, and the frequency of the used terahertz radiation for both amplitude and phase objects. Comparison of the obtained results with theoretical estimations shows that pulsed terahertz time-domain holography provides ample opportunities for contactless visualization and non-destructive testing.