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RIS citation export for TUYD4: Towards High Brightness from Plasmon-Enhanced Photoemitters

AU  - Pierce, C.M.
AU  - Bazarov, I.V.
AU  - Durham, D.B.
AU  - Filippetto, D.
AU  - Kachwala, A.H.
AU  - Karkare, S.S.
AU  - Maxson, J.M.
AU  - Minor, A.
AU  - Riminucci, F.
ED  - Biedron, Sandra
ED  - Simakov, Evgenya
ED  - Milton, Stephen
ED  - Anisimov, Petr M.
ED  - Schaa, Volker R.W.
TI  - Towards High Brightness from Plasmon-Enhanced Photoemitters
J2  - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022
CY  - Albuquerque, NM, USA
T2  - International Particle Accelerator Conference
T3  - 5
LA  - english
AB  - Plasmonic cathodes, whose nanoscale features may locally enhance optical energy from the driving laser trapped at the vacuum interface, have emerged as a promising technology for improving the brightness of metal cathodes. A six orders of magnitude improvement [1] in the non-linear yield of metals has been experimentally demonstrated through this type of nanopatterning. Further, nanoscale lens structures may focus light below its free-space wavelength offering multiphoton photoemission from a region near 10 times smaller [2] than that achievable in typical photoinjectors. In this proceeding, we report on our efforts to characterize the brightness of two plasmonic cathode concepts: a spiral lens and a nanogroove array. We demonstrate an ability to engineer and fabricate nanoscale patterned cathodes by comparing their optical properties with those computed with a finite difference time domain (FDTD) code. The emittance and nonlinear yield of the cathodes are measured under ultrafast laser irradiation. Finally, prospects of this technology for the control and acceleration of charged particle beams are discussed.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 285
EP  - 288
KW  - cathode
KW  - electron
KW  - laser
KW  - interface
KW  - emittance
DA  - 2022/10
PY  - 2022
SN  - 2673-7000
SN  - 978-3-95450-232-5
DO  - doi:10.18429/JACoW-NAPAC2022-TUYD4
UR  - https://jacow.org/napac2022/papers/tuyd4.pdf
ER  -