The conduction current and displacement current in a Terahertz antenna
- Resource Type
- Conference
- Authors
- Jia, WanLi; Shi, Wei; Ji, WeiLi; SuGuo Chen; SiFeng Wu
- Source
- Proceedings of 2011 International Conference on Electronics and Optoelectronics Electronics and Optoelectronics (ICEOE), 2011 International Conference on. 3:V3-291-V3-294 Jul, 2011
- Subject
- Components, Circuits, Devices and Systems
Computing and Processing
Photonics and Electrooptics
Robotics and Control Systems
Signal Processing and Analysis
Engineered Materials, Dielectrics and Plasmas
Optical pumping
Atomic measurements
Magnetic domains
Antenna radiation patterns
Analytical models
Conductors
Monte Carlo model
displacement current
condcution current
Terahertz
- Language
A semiclassical Monte Carlo model is presented to study the time-varying conduction current and displacement current in a Terahertz photoconductive antenna after photoexcitation. We analyzed conduction current and displacement current in a biased GaAs photoconductive antenna after fs laser pulse excitation as a function of bias voltage, pump pulse energy. While we analyzed conduction current and displacement current contribute on THz wave radiation. The simulation results show that the light-intensity dependence mainly influences the pulse amplitudes of the conduction current and the displacement current and THz wave. At the same light-intensity, higher bias field gives larger conduction current. The simulation results show that conduction current and displacement current are source of THz waveform radiated by bias photoconductive current.