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Photocathode, electron tube, field assist type photocathode, field assist type photocathode array, and field assist type electron tube
Photocathode, electron tube, field assist type photocathode, field assist type photocathode array, and field assist type electron tube
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机译:光电阴极,电子管,场辅助型光电阴极,场辅助型光电阴极阵列和场辅助型电子管
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摘要
When light is incident to an antenna layer AA6 of a photocathode AA1, light of a specific wavelength included in the incident light couples with surface plasmons in the antenna layer AA6 whereupon near-field light is outputted from a through hole AA14. The intensity of the output near-field light is proportional to and greater than the intensity of the light of the specific wavelength. The output near-field light has a wavelength that can be absorbed in a photoelectric conversion layer AA4. The photoelectric conversion layer AA4 receives the near-field light outputted from the through hole AA14. A region of the photoelectric conversion layer AA4 around the through hole AA14 absorbs the near-field light and generates photoelectrons (e−) in an amount according to the intensity of the near-field light. The photoelectrons (e−) generated in the photoelectric conversion layer AA4 are outputted to the outside.
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