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The properties of opaque CsI photocathode
Liu, Yong-An1,2; Liu, Zhe1; Sheng, Li-Zhi1; Tian, Jin-Shou1; Wei, Ru-Yi1,3; Zhao, Bao-Sheng1
Conference NameOptoelectronic Imaging and Multimedia Technology V 2018
Source PublicationOptoelectronic Imaging and Multimedia Technology V
Conference Date2018-10-11
Conference PlaceBeijing, China
Contribution Rank1
AbstractCesium iodide (CsI) photocathode is widely used in various UV (ultraviolet) detecting devices because of its high quantum efficiency (QE) and good stability under short exposure to humid air. In this paper, the performance of the opaque CsI photocathode is studied, including imaging performance, influence of humidity on the quantum efficiency and the stability of the CsI photocathode under FUV irradiation. In the experiment, the input surface of the MCP was evenly divided into four parts. Different thicknesses of the CsI photocathode were deposited directly on the front surface of micro-channel plates (opaque photocathode). The response of different thicknesses and the stability of UV quantum efficiency of CsI photocathode under FUV illumination were studied by using UV monochromator. At the same time, the influence of humid air exposure on the quantum efficiency of CsI photocathode was tested. According to the experimental results, a FUV detector (vacuum tube) based on opaque CsI photocathode was fabricated and the quantum efficiency of the detector was tested. Absolute quantum efficiency of the FUV detector is over 15.5% at 121nm. © 2018 SPIE.
Indexed ByEI
EI Accession Number20190106339767
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Document Type会议论文
Affiliation1.State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China;
3.CAS Key Laboratory of Spectral Imaging Technology, Xi'an; 710119, China
Recommended Citation
GB/T 7714
Liu, Yong-An,Liu, Zhe,Sheng, Li-Zhi,et al. The properties of opaque CsI photocathode[C]:SPIE,2018.
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