Title :
Propagation Characteristics of the Terahertz Pulse in the Free Space
Author :
Zhou, Weihui ; Zhang, Yan
Author_Institution :
Capital Normal Univ., Beijing
Abstract :
In this work, characteristics of the propagation behavior of the terahertz (THz) pulse in the free space are presented by numerical simulations. The algorithm is based on the angular spectrum theory. The spatiotemporal coupling of the THz pulse during propagation results in a significantly time dependent beam diameter and wave front. The two dimensional dynamic evolution of the THz pulse passing through an aperture is obtained. The diffraction is time dependent as the pulse travels through the aperture, which can be clearly observed in simulations.
Keywords :
electromagnetic coupling; electromagnetic pulse; electromagnetic wave diffraction; spatiotemporal phenomena; submillimetre wave propagation; angular spectrum theory; circular aperture; diffraction pattern; free space; numerical simulation; propagation characteristics; spatiotemporal coupling; terahertz pulse; Frequency; Optical diffraction; Optical imaging; Optical propagation; Optical pulses; Optimized production technology; Pulse measurements; Space technology; Submillimeter wave propagation; Ultrafast optics;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0400-2
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368770
