17 April 2001 Evaluation of an improvement method of the simultaneity of an ultrahigh-speed framing camera
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Proceedings Volume 4183, 24th International Congress on High-Speed Photography and Photonics; (2001) https://doi.org/10.1117/12.424277
Event: 24th International Congress on High-Speed Photography and Photonics, 2000, Sendai, Japan
Abstract
We propose a method to improve the shuttering characteristics of an ultra high-speed camera that consists of a proximity focused image intensifier (PFII) with an external transparent electrode (ETE). When the shuttering time of several tens of picoseconds is considered, the time delay by the propagation of the shuttering pulse can not be disregarded, and this time delay causes the problems in the system's simultaneity. First, the time of which the image was recorded is different by the place. Second, the time in which the photoelectron reaches the micro channel plate (MCP) input surface is different. For our research, the second problem mentioned above poses an obstacle. To utilize the nonlinear operation of the MCP for smaller gating time, it is necessary that each electron reaches the MCP in same time. Our proposal is to compensate for this second problem by controlling the electric field between the photocathode and the MCP. This is achieved by optimizing the shape of the electrode of the ETE. We show that the variance of arrival time is reduce from 30 ps to 5 ps using numerical analysis by FDTD method.
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Yoshihiro Ito, Yasuto Katoh, Makoto Kagata, Satoshi Tomioka, Takeaki Enoto, "Evaluation of an improvement method of the simultaneity of an ultrahigh-speed framing camera", Proc. SPIE 4183, 24th International Congress on High-Speed Photography and Photonics, (17 April 2001); doi: 10.1117/12.424277; https://doi.org/10.1117/12.424277
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