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An Electron Beam Manipulated by Laguerre-Gaussian Modes
- Authors
- Lan, Yung-Chiang; Lin, Ming-Chieh
- Issue Date
- Apr-2024
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Laguerre-Gaussian (LG) Modes; Light's Orbital Angular Momentum; Particle-in-cell Simulation
- Citation
- 2024 Joint International Vacuum Electronics Conference and International Vacuum Electron Sources Conference, IVEC + IVESC 2024, pp 1 - 2
- Pages
- 2
- Indexed
- SCOPUS
- Journal Title
- 2024 Joint International Vacuum Electronics Conference and International Vacuum Electron Sources Conference, IVEC + IVESC 2024
- Start Page
- 1
- End Page
- 2
- Abstract
- Manipulation of electron beam by Laguerre-Gaussian (LG) modes is investigated using finite-difference time-domain particle-in-cell (FDTD-PIC) simulations. The simulated azimuthal velocity profiles of macro-particles display a 3-D spiral pattern with the number of strands equal to a sum of the state number of spin angular momentum (SAM) and the orbital angular momentum (OAM) of LG modes. These spiral patterns move along with the electron beam like a helical traveling wave. The macro-particles also exhibit both an orbit revolution and a small rotation motion. The former is very similar to the gyromotion of electrons under an external magnetic field. The rotation motion has the same frequency as that of the LG mode while the orbit revolution frequency is far lower.
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Related Researcher
- Lin, Ming Chieh
- COLLEGE OF ENGINEERING (MAJOR IN ELECTRICAL ENGINEERING)