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Title:
PHOTO-CATHODE FOR A VACUUM SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/262239
Kind Code:
A1
Abstract:
This invention concerns a photo-cathode for a vacuum system, wherein the photo-cathode is configured for receiving electromagnetic radiation having an incoming wavelength and for emitting electrons in response thereto. The photo-cathode comprises a conducting structure having a geometry, the geometry comprising a tip section. The tip section is adapted to provide field enhancement, β, when the conducting structure is illuminated with the electromagnetic radiation, wherein β is greater than about 102. The photo-cathode further comprising a substrate, the substrate being or comprising a dielectric substrate, the substrate supporting the conducting structure.

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Inventors:
JEPSEN PETER UHD (DK)
LANGE SIMON LEHNSKOV (DK)
SUYAMA MOTOHIRO (JP)
IGUCHI MASAHIKO (JP)
Application Number:
PCT/JP2020/024161
Publication Date:
December 30, 2020
Filing Date:
June 19, 2020
Export Citation:
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Assignee:
UNIV DENMARK TECH DTU (DK)
HAMAMATSU PHOTONICS KK (JP)
International Classes:
H01J1/34; H01J1/304
Domestic Patent References:
WO2015028029A12015-03-05
Foreign References:
US20160343532A12016-11-24
US20070228355A12007-10-04
JP2006074021A2006-03-16
US4591717A1986-05-27
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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