Rate effects of standard and high-strip-current microchannel plate image intensifiers

George J. Yates; Kevin L. Albright; Paul A. Zagarino; Matthew C. Thomas

doi:10.1117/12.50531

1 January 1992 Rate effects of standard and high-strip-current microchannel plate image intensifiers

George J. Yates, Kevin L. Albright, Paul A. Zagarino, Matthew C. Thomas

Proceedings Volume 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91; (1992) https://doi.org/10.1117/12.50531
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

The gains of gated MCPIIs at high repetition rate (up to 10 kHz) were measured. Comparisons were made between the gain behavior of a standard ITT type F4111 MCPII and similar device incorporating a high strip current microchannel plate. The most notable effect observed for the standard MCPII is a decline in luminous gain with increasing gate repetition rate and with higher input irradiances. The intensifier with the higher strip current microchannel plate (MCP), on the other hand, exhibited little or no reduction in gain for gating frequencies up to 10 kHz under similar test conditions (60 pJ/cm2 input energy density). The charge storage capacity and recharge time of the standard MCPII are most likely the limiting factors in its ability to maintain a constant gain at high repetition rates. The limiting effect of the recharge time on the MCP gain is calculated and compared to the actual measurements.

Citation Download Citation

George J. Yates, Kevin L. Albright, Paul A. Zagarino, and Matthew C. Thomas "Rate effects of standard and high-strip-current microchannel plate image intensifiers", Proc. SPIE 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91, (1 January 1992); https://doi.org/10.1117/12.50531

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