IEEE Journal of Quantum Electronics · 1996 · 45 citations · 15 references
EngineeringElectrical EngineeringMaterials ScienceOptoelectronicsPhotonicsSemiconductor DevicesOptical SwitchingOptoelectronic DevicesUltrafast OpticsNonuniform Current DistributionPhotocarrier DynamicsPhotocurrent GenerationPolarity DependenceSamplingUltrafast Carrier DynamicsUltrafast Pulse GenerationUltrashort Pulse Generation
Carrier and field dynamics in photoconductive switches are investigated by electrooptic sampling and voltage-dependent reflectivity measurements. We show that the nonuniform field distribution due to the two-dimensional nature of coplanar photoconductive switches, in combination with the large difference in the mobilities of holes and electrons, determine the pronounced polarity dependence. Our measurements indicate that the pulse generation mechanism is a rapid voltage breakdown across the photoconductive switch and not a local field breakdown.
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Generation of subpicosecond electrical pulses on coplanar transmission lines
M. B. Ketchen, D. Grischkowsky, T. C. Chen et al. · Applied Physics Letters · 1986 · 232 citations
Femtosecond intervalley scattering in GaAs
P. C. Becker, H. L. Fragnito, C. H. Brito Cruz et al. · Applied Physics Letters · 1988 · 127 citations