Multichannel gallium arsenide photo-conductive switch

• Main Authors: CHEN YI, WANG WEI, LIU YI, SHI JINSHUI, ZHANG HUANG, LIU YUNLONG, YE MAO, PAN HAIFENG, ZHANG LINWEN, XIA LIANSHENG
• Format: Patent
• Language: English
• Published: 13.05.2015
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The utility model provides a multichannel gallium arsenide photo-conductive switch. An insulation pedestal in the photo-conductive switch is provided with N long strip gallium arsenides parallelly arranged; the gallium arsenides and the insulation pedestal are in fixed connection; spaces between adjacent gallium arsenides are the same, and adjacent gallium arsenides form channels on the insulation pedestal; two ends of a gallium arsenide are flush, and insulating media are arranged in the channels. Two ends of a gallium arsenide piece are provided with alloy electrodes; alloy electrodes at a same end of the gallium arsenides are in mutual connection. According to the utility model, in an appropriate bias electric field and under infrared laser triggering, N gallium arsenides generate M conductive channels (1<M<=N). The conduction internal resistance is 1/M of a single channel photo-conductive switch, thereby obviously improving conduction characteristics of the photo-conductive switch. The total heating power is 1/M of a single channel photo-conductive switch; the heating power of each conducting channel is 1/M2 of the single channel photo-conductive switch, thereby greatly reducing heating and heat loss of the photo-conductive switch, and prolonging the service life of the photo-conductive switch.