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Proceedings Paper

Research for gate drive technology based on image intensifier
Author(s): Guangqiang Xu; Baiyu Liu; Yongsheng Gou
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Paper Abstract

In order to improve the dynamic range and the signal-noise ratio of the image intensifier, keep the flux of the screen of image intensifier constant. In the article, introduced a design of the switching power supply and tested its performance. Firstly, used a sampling amplifier amplify the feedback current signals. The feedback signals were converted into square wave signals through a digital circuit. Then, using the MOSFET in the post stage circuit produced high voltage and high speed adjustable square pulses. The frequency of the pulse is 1 kHz, the speed of the cutting edge is 20ns and the amplitude is 200V. The photoelectron emission time of the photocathode is short when the width of the high speed pulse is narrow for strong illumination. On the contrary, the time is long when the width is wide for weak illumination. The number of photoelectron is a constant no matter what kind of the illumination. It keeps the flux reaching the phosphor screen constant.

Paper Details

Date Published: 8 March 2017
PDF: 7 pages
Proc. SPIE 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 1025507 (8 March 2017); doi: 10.1117/12.2267602
Show Author Affiliations
Guangqiang Xu, State Key Lab. of Transient Optics and Photonics (China)
Univ. of Chinese Academy of Sciences (China)
Baiyu Liu, State Key Lab. of Transient Optics and Photonics (China)
Xi'an Institute of Optics and Precision Mechanics (China)
Yongsheng Gou, State Key Lab. of Transient Optics and Photonics (China)
Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 10255:
Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016
Yueguang Lv; Jialing Le; Hesheng Chen; Jianyu Wang; Jianda Shao, Editor(s)

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