2012
DOI: 10.1002/mop.26683
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Investigation of ultra‐wideband electromagnetic radiation based on SI‐GaAs photoconductive switches

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 … Show more

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Cited by 3 publications
(3 citation statements)
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“…Among them, the method involving the use of a photoconductive switch (antenna), which typically consists of a metallic antenna patterned on a high-mobility semiconductor substrate, is the simplest and the most widely used THz wave generation method for producing a continuous spectrum up to a few THz upon exposure to an ultrashort laser pulse [11].…”
Section: Introductionmentioning
confidence: 99%
“…Among them, the method involving the use of a photoconductive switch (antenna), which typically consists of a metallic antenna patterned on a high-mobility semiconductor substrate, is the simplest and the most widely used THz wave generation method for producing a continuous spectrum up to a few THz upon exposure to an ultrashort laser pulse [11].…”
Section: Introductionmentioning
confidence: 99%
“…Compared to conventional electrically‐triggered devices such as spark gaps or thyratrons, high‐resistivity high‐gain photoconductive semiconductor switches have been considered as a favored choice due to its many inherent advantages, such as compact in size, low jitter, better rise time, high hold‐off voltage, high‐gain property especially the presence of gain mechanism . It is known that the SI‐GaAs PCSS can operate in the high‐gain or “lock‐on” work mode (or named nonlinear mode) if the laser energy and the bias electrical field are simultaneously over the triggering threshold and this work mode requires less laser power for switching operations since 10 3 –10 5 electron‐hole (e‐h) pairs can be produced by absorbing each photon.…”
Section: Introductionmentioning
confidence: 99%
“…With further researches, it has been gradually recognized the application prospects of terahertz wave in the fields of communications, medical, security and materials science [1][2][3][4][6][7][8][9][10][11][12] . At the present stage, the technology of THz pulses generated using linear photoconductivity antennas has been widely used.…”
Section: Introductionmentioning
confidence: 99%