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We compared the performance of SI-GaAs stripline antennas with different gaps, the widths of electrodes and electrode material by experiment. Large gap antenna have high electrical to terahertz (THz) and optical to THz conversion efficiency. The dynamic range of antenna with 150 mum gap, 100 mum Au/Ge/Ni electrodes and heat sink is 6300 without purging.
Based on the characteristics of the GaAs photoconductive semiconductor switch (PCSS) and the spark gap, a new combined switch is developed. The combined switch integrates a traditional GaAs PCSS and a normal spark gap, which could offer two to three times of self-breakdown voltage for the spark gap in nanoseconds. Compared with the traditional single GaAs PCSS, a higher peak current at the output...
The generation of triggered jitter-free ultra-fast electrical pulses is important in precise and ultra-fast bing bang control. Experiments of a lateral semi-insulating GaAs photoconductive semiconductor switch triggered by nanosecond laser pulse were reported. The switches were insulated by solid multi-layer transparent dielectrics. Jitter-free electrical pulse from the 1 mm-gap GaAs switches was...
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