Optimisation of THz pulse emitted by InGaAs Photoconductive switch (PCS) with indigenous code MAXTRA 3D solving coupled MAXwell & TRAnsport equations in three dimensions with adaptative mesh.
Parametric study of THz pulse versus :
- Static polarization (ddp)
- Nature of the materials (gap in lifetime of carriers short, III-V semi-insulating
- Substrate (InP or GaAs) substrate dielectric (BCB)
- Position of the laser spot
- Electron mobility
- Topology of the gap
- Characteristic impedance
Photoconductive switch (PCS) on semi insulated InP inserted in CPW:
- Ey electrical field in PCS gap
- THz pulse on the edge of PCS gap