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High gain GaAs photoconductive semiconductor switch offers many advantages for the pulsed power applications including beam accelerator, optically activated electrical fireset, electro-optic driver1–2. In view of the specific application considerations, it is required to replace the desktop laser system by laser diode (LD) sources, i.e., micro-joules excitation energy, which leads to the promise of...
The electromagnetic noise generated by terahertz photoconductive emitters was investigated, and the intensity of noise spectrum was analyzed by statistical method. The relationship between the noise of the emitter and the resistivity as well as carrier lifetime of the antenna material was obtained. And the effect of carrier lifetime and mobility of antennas on the THz generation efficiency was investigated...
Distribution of electrical field in four kinds of antennas with different gaps were tested, and electrical field enhancement on the anodes is testified, the electrical field distributes in a large region, which extends from several tens of microns to hundreds of microns which is decided by the gap size.
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