Title :
Monte Carlo Simulation of Terahertz Radiation Waveform from SI-GaAs Photoconductive Antennas
Author :
Jia, WanLi ; Ji, WeiLi ; Shi, Wei
Author_Institution :
Xian Univ.of Technol., Xian
Abstract :
A self-consistent Monte Carlo approach is used to simulate the time resolved terahertz radiation from Si-GaAs photoconductive antenna. An adjustable energy and width of fs laser pulse is applied to illuminate Si-GaAs-based photoconductive antennas. The THz wave profile by simulation is similar to THz radiation waveform from experiment. We analyzed carrier dynamics in photoconductive antenna, and interpreted the mechanism that the width of emitted THz pulse was much wider than the pump pulse. And the mechanism that THz bipolar waveform emitted from Si-GaAs-based photoconductor trigged by high energy optical pulse at lower biased voltage was studied.
Keywords :
III-V semiconductors; Monte Carlo methods; elemental semiconductors; gallium arsenide; high-speed optical techniques; microwave photonics; photoconducting materials; silicon; submillimetre wave antennas; submillimetre wave generation; Monte Carlo simulation; Si-GaAs; THz bipolar waveform; THz pulse; carrier dynamics; high-energy optical pulse; photoconductive antennas; terahertz radiation waveform; time resolved terahertz radiation; ultra-fast laser pulse; Dipole antennas; Gallium arsenide; Optical pulse generation; Optical pulses; Photoconducting devices; Photoconductivity; Receiving antennas; Space vector pulse width modulation; Submillimeter wave technology; Surface emitting lasers;
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.2006.368333
