Image Converter With III-V Compound Reflective Mode Photocathode

H. L. Palmer; N. J. Koda; John H. Dinan

doi:10.1117/12.953862

1 March 1974 Image Converter With III-V Compound Reflective Mode Photocathode

H. L. Palmer, N. J. Koda, John H. Dinan

Proceedings Volume 0042, Image Intensifiers: Technology, Performance, Requirements, and Applications; (1974) https://doi.org/10.1117/12.953862
Event: Annual Technical Symposium, 1973, San Diego, United States

Abstract

Very high luminous sensitivities and quantum efficiencies have been reported for III-V compound photocathodes operated in the reflective mode. Sensitivities as high as 2000 μA/lumen for GaAs have been reported (Ref.l) on a research basis. However, most practical imaging devices require operation of the cathode in a semitransparent mode. When semitransparent III-V photocathodes are synthesized by such techniques as epi layers grown on transparent substrates, much lower sensitivities than reflective-mode cathodes are reported. In addition, the broadband response capabilities of the reflectronic mode are generally compromised to some degree when the latter technique is used. Thus, the substantially increased sensitivity of the reflective mode compared to the transmissive mode is sufficient motivation to evaluate possible methods for using reflective III-V compound reflective photocathodes in imaging devices.

Citation Download Citation

H. L. Palmer, N. J. Koda, and John H. Dinan "Image Converter With III-V Compound Reflective Mode Photocathode", Proc. SPIE 0042, Image Intensifiers: Technology, Performance, Requirements, and Applications, (1 March 1974); https://doi.org/10.1117/12.953862

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