Bulletin of the American Physical Society
76th Annual Gaseous Electronics Conference
Volume 68, Number 9
Monday–Friday, October 9–13, 2023; Michigan League, Ann Arbor, Michigan
Session IW5: Poster Session II; Exhibition & Coffee (4:00pm-6:00pm)
4:00 PM,
Wednesday, October 11, 2023
Room: Michigan League, Ballroom
Abstract: IW5.00009 : Beam density modulation during emission under RF and laser fields*
Presenter:
Lan Jin
(Michigan State University)
Authors:
Lan Jin
(Michigan State University)
Yang Zhou
(Michigan State University)
Peng Zhang
(Michigan State University)
Collaboration:
Lan Jin1, Yang Zhou1, Peng Zhang1
This work demonstrates various pulse shapes of pre-bunched electron beams emitted from a radio frequency (RF) cold cathode under different combinations of RF field and optical field (continuous-wave or pulsed), using an exact quantum model for photo-/field- emission [Y. Zhou and P. Zhang, J. Appl. Phys. 130(6), 064902 (2021)]. The profile of the produced emission current can be modulated by varying RF field (amplitude and frequency) and optical field (laser wavelength, laser intensity, pulse length). The emission current pulse amplitude, beam width, electron numbers per pulse, as well as the harmonic spectrum of the current pulse, are investigated in detail under various combinations of RF and optical fields.
*This work was supported by ONR YIP Grant No. N00014-20-1-2681, and AFOSR Grant Nos. FA9550-20-1-0409 and FA9550-22-1-0523.
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