Dynamic modulation transfer function measurements in gated microchannel-plate image intensifiers

Matthew C. Thomas; Paul A. Zagarino; George J. Yates

doi:10.1117/12.139147

19 January 1993 Dynamic modulation transfer function measurements in gated microchannel-plate image intensifiers

Matthew C. Thomas, Paul A. Zagarino, George J. Yates

Proceedings Volume 1757, Ultrahigh- and High-Speed Photography, Videography, and Photonics; (1993) https://doi.org/10.1117/12.139147
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

The resolution of microchannel-plate image intensifiers (MCPIIs), when specified by manufacturers, is usually only measured while the MCPII is biased on with dc voltages (dc mode). We present data on the resolution of two proximity focused MCPIIs under both dc bias and pulsed voltage operation (gated mode). The resolution is determined by recording a digital image of the MCPII's output for an input in the form of a spatial impulse. By calculating the Fourier transform of the two-dimensional output images distribution (the output point spread function), the modulation transfer function can be found. The effects of input optical energy density, gate repetition rate, gate width, and input position on the resolution of a standard ITT MCPII and a high strip current ITT MCPII are studied.

Citation Download Citation

Matthew C. Thomas, Paul A. Zagarino, and George J. Yates "Dynamic modulation transfer function measurements in gated microchannel-plate image intensifiers", Proc. SPIE 1757, Ultrahigh- and High-Speed Photography, Videography, and Photonics, (19 January 1993); https://doi.org/10.1117/12.139147

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