Title :
Design of optimum terahertz transient response using finite-difference time-domain (FDTD) method
Author :
Lee, Heeseok ; Lee, Jongjoo ; Kim, Woopoung ; Lee, Jaehoon ; Kim, Joungho
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
Summary form only given. The efficient generation of high intensity and high bandwidth terahertz radiation using photoconductive antenna has attracted lots of interest for terahertz imaging. Increasing the static field at the point of optical-pulse illumination between the photoconductive gap has enhanced the intensity of the terahertz radiation. However, the dependency of the radiation bandwidth on the antenna geometry has not been studied yet. In this work, we have investigated the effect of the antenna geometry on the 3 dB-bandwidth and the peak field intensity of the terahertz emitter based on the FDTD method (finite-difference time domain method)
Keywords :
finite difference time-domain analysis; optimisation; submillimetre wave antennas; submillimetre wave imaging; submillimetre wave measurement; transient response; FDTD method; THz imaging; antenna geometry; finite-difference time domain method; finite-difference time-domain method; high bandwidth terahertz radiation; high intensity; optical-pulse illumination; optimum terahertz transient response design; peak field intensity; photoconductive antenna; photoconductive gap; radiation bandwidth; static field; terahertz emitter; terahertz imaging; Antennas and propagation; Bandwidth; Dipole antennas; Electrodes; Finite difference methods; Geometrical optics; Optical pulse generation; Photoconductivity; Time domain analysis; Transient response;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1998. LEOS '98. IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-4947-4
DOI :
10.1109/LEOS.1998.737809
