We include transient carrier velocity dynamics in a model describing the terahertz radiation from a large-aperture, biased photoconductor triggered by an ultrashort optical pulse. Waveforms of the radiated electric field are calculated as a function of optical excitation fluence and bias field. The model is applied to terahertz generation in biased GaAs photoconductors.
© 1994 Optical Society of America
Original Manuscript: June 10, 1994
Published: December 1, 1994
G. Rodriguez, S. R. Caceres, and A. J. Taylor, "Modeling of terahertz radiation from biased photoconductors: transient velocity effects," Opt. Lett. 19, 1994-1996 (1994)