Abstract
A new ultra-wideband electromagnetic pulse generating based on the photoconductive semiconductor switches (PCSS) is presented. Semi-insulated Gallium Arsenide is used to develop the PCSS for an ultrashort electromagnetic pulse source. The construction and the work principle of PCSS are illustrated in this paper. The experimental results of ultra-wide-band radiation with DC biased GaAs photoconductive semiconductor switch triggered by nanosecond (ns), picosecond (ps), femtosecond (fs) laser pulse, are reported respectively. The radiations of the PCSS triggered by the ns laser pulse, the ps laser pulse and fs laser pulse series illustrate that the electromagnetic pulses would have high repetition of more than 80 MHz and frequency bandwidth of DC-7.6 GHz. The radiation characteristic of the ultrafast electrical pulse generated by PCSS is analyzed. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:900–904, 2012;, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26683
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