Adjusted Smith-Purcell radiation on helical grating by electron motion excited surface plasmon

  • 陳 弘捷

Student thesis: Doctoral Thesis


In this paper a ring electron beam is used to excite the surface plasmon on the cylinder and then the surface plasmon is converted into Smith-Purcell radiation by designing a periodic grating By changing the period size and electron beam speed of the grating structure Smith- Purcell radiation radiates out at the angle we want Then change the periodic grating to a helical periodic grating which can radiate the orbital angular momentum beam and then radiate through Smith-Purcell to design the radiation at the angle we want
Date of Award2020
Original languageEnglish
SupervisorYung-Chiang Lan (Supervisor)

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