Interference Photo Cathodes, T419-J203.
INSTITUTE OF MODERN LANGUAGES INC WASHINGTON DC TRANSLATION AND INTERPRETATIO N DIV
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Incident-light interference cathodes composed of S 20 layer, dielectric intermediate layer and silver reflector make it possible in the multi-alkali layer, which only absorbs 20 as a normal cathode, to absorb 75 of the irradiated light energy. The optical absorption increase corresponds to the photoelectric amplification factor. At 720 nm the wavelength for which the adaptation results amounts to the value of the amplification factor 3.7. The cathode does not operate selectively, since the amplification range is 400 nm wide. A comparison between incident-light interference cathodes and reflective cathodes shows that the best amplification in the near I.R. range is to be obtained with the aid of the incident-light interference cathode. Author
- Electrical and Electronic Equipment