发明授权
US06376985B2 Gated photocathode for controlled single and multiple electron beam emission
失效
用于受控单电子束和多电子束发射的门控光电阴极
- 专利标题： Gated photocathode for controlled single and multiple electron beam emission
- 专利标题（中）： 用于受控单电子束和多电子束发射的门控光电阴极
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申请号： US09052903申请日： 1998-03-31
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公开(公告)号： US06376985B2公开(公告)日： 2002-04-23
- 发明人: Kim Y. Lee , Tai-Hon Philip Chang , Marian Mankos , C. Neil Berglund
- 申请人： Kim Y. Lee , Tai-Hon Philip Chang , Marian Mankos , C. Neil Berglund
- 主分类号： H01J4006
- IPC分类号： H01J4006
摘要：
A photocathode having a gate electrode so that modulation of the resulting electron beam is accomplished independently of the laser beam. The photocathode includes a transparent substrate, a photoemitter, and an electrically separate gate electrode surrounding an emission region of the photoemitter. The electron beam emission from the emission region is modulated by voltages supplied to the gate electrode. In addition, the gate electrode may have multiple segments that are capable of shaping the electron beam in response to voltages supplied individually to each of the multiple segments.