Volcano-structured Double-gated Field Emitter Arrays; Emission Characteristics and Applications
2023 24th International Vacuum Electronics Conference (IVEC)(2023)
摘要
Volcano-structured double-gated field emitter arrays (VDG-FEAs) have realized both highly focusing electron beam and high emission current. The prototype image sensor using Spindt-type VDG-FEA has obtained a reproduced image with uniform image intensity without magnetic focusing. we describe a compact image sensor using the VDG-FEA. We are developing a 300 GHz band traveling wave tube (TWT) using a thermal cathode. We believe that the VDG-FEA is a promising cathode for the 300 GHz TWT in the future.
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关键词
field emitter array,double-gate,electrostatic-focusing,image sensor,traveling wave tube
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