Laser & Optoelectronics Progress, Volume. 59, Issue 23, 2332001(2022)
Study on Gain Uniformity of Microchannel Plate
When a gated framing camera is operating, the gating pulse transmission attenuation effect will greatly weaken the gain of microchannel plate (MCP) microstrip line and affect the camera performance. The attenuation model of gate voltage pulse transmitting on MCP microstrip line was established, and the gain uniformity of MCP was simulated. As the results, amplitude of voltage pulse decays exponentially in MCP microstrip. Under the attenuation coefficient of 0.0041 Np/mm, the voltage amplitude attenuates to 85% of the original value and the MCP gain attenuates to 29% of the original value at the position of 40 mm. Effects on MCP gain uniformity caused by three methods (voltage compensation, microstrip end reflection compensation, and width gradient microstrip line compensation) were simulated. The three compensation methods were combined to obtain a microstrip line compensation model. In the model, for the minimum width of microstrip is 4 mm, the voltage transmission amplitude is maintained above 94%, and the MCP gain is maintained at 66%.
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Pokun Deng, Kaixuan Lin, Qiuyan Luo, Jinghua Long, Dong Wang, Yunfei Lei, Junkun Huang, Yong Wang, Houzhi Cai, Jinyuan Liu, Lihong Niu. Study on Gain Uniformity of Microchannel Plate[J]. Laser & Optoelectronics Progress, 2022, 59(23): 2332001
Category: Ultrafast Optics
Received: Jan. 24, 2022
Accepted: Jun. 22, 2022
Published Online: Nov. 30, 2022
The Author Email: Niu Lihong (niulh@szu.edu.cn)