Abstract
Picosecond electrical pulse excitation of the ballistic three-branch junctions (TBJs) was performed to investigate the electrical response at terahertz frequencies. The generation of picosecond electrical pulses and the signal detection with sub-picosecond temporal resolution were achieved by a photoconductive switch and the time-resolved electro-optical sampling technique, respectively, with the help of the femtosecond Ti:Sapphire laser system. The electrical response of a TBJ rectifier to the 1.75-ps-wide incident pulse was successfully measured and its frequency spectrum was not degraded in the tested frequency range, as compared to the incident excitation.
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