Title :
Spatial carrier dynamics in photoconductors following femtosecond laser excitation
Author :
Kim, Dae Sin ; Citrin, David
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
This study demonstrates the spatial carrier dynamics by Monte Carlo method on subpicosecond time scales including screening self-consistently through Poisson´s equation. Numerical analysis of photoexcited carrier by the Monte Carlo method provides guidelines for the optimization of terahertz pulses. Results including the spatial effect at various the bias fields, electrode shapes, and optical fluences are also presented.
Keywords :
Monte Carlo methods; Poisson equation; carrier mobility; high-speed optical techniques; optical pumping; photoconducting materials; submillimetre wave generation; Monte Carlo method; Poisson equation; bias fields; electrode shapes; femtosecond laser excitation; optical fluences; photoconductors; photoexcited carrier; spatial carrier dynamics; spatial effect; subpicosecond time scales; terahertz pulse optimization; Electrodes; Guidelines; Laser excitation; Numerical analysis; Optical pulses; Optimization methods; Photoconductivity; Poisson equations; Shape; Ultrafast optics;
Conference_Titel :
Numerical Simulation of Optoelectronic Devices, 2004. NUSOD '04. Proceedings of the 4th International Conference on
Print_ISBN :
0-7803-8530-6
DOI :
10.1109/NUSOD.2004.1345175
