16 August 1988 Some Ultraviolet Spectral Sensitivity Characteristics of Broadband Multialkali Photocathodes
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Window and photocathode combinations are used to produce detectors having broadband spectral sensitivities. Using synthetic fused silica input windows and multialkali photocathodes, useful sensitivities are produced in the 160 - 900 nm spectral range. Interesting and strongly wavelength dependent sensitivity and photoelectron emission energy effects are observed in the uv and near-uv spectral regions. A physical model is proposed to describe the observations, based upon wavelength dependent photon absorption, single and multiple photoelectron emission, and thin-film interference effects. These window/photocathode combinations are used in microchannel plate (MCP) photomultiplier tubes (PMTS), MCP image tubes, and position-sensing-PMTS. A near-uv transmissive fiber-optic window/cathode assembly is used on a streak-tube, and its characteristics are also discussed.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. B. Johnson, C. B. Johnson, L. Bonney, L. Bonney, R. F. Floryan, R. F. Floryan, } "Some Ultraviolet Spectral Sensitivity Characteristics of Broadband Multialkali Photocathodes", Proc. SPIE 0932, Ultraviolet Technology II, (16 August 1988); doi: 10.1117/12.946902; https://doi.org/10.1117/12.946902


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