Optimizing the electron acceleration in vacuum by chirped ultrashort laser pulse using particle swarm method
| Autor: | Fazel Jahangiri, Ali Reza Niknam, M. Rezaei-Pandari |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Physics::Optics Particle swarm optimization Electron Condensed Matter Physics Laser Atomic and Molecular Physics and Optics law.invention Pulse (physics) Acceleration Optics Electron acceleration law Chirp Physics::Atomic Physics Electrical and Electronic Engineering business Energy (signal processing) |
| Zdroj: | Laser and Particle Beams. 37:242-251 |
| ISSN: | 1469-803X 0263-0346 |
| Popis: | Efficient electron acceleration by a linearly chirped ultrashort laser pulse in vacuum is investigated using the particle swarm optimization method. By applying this method for optimizing the initial parameters of the laser pulse, a pronounced increase in final energy gain of the electron is obtained compared to that expected from the successive optimization method. Our results also suggest that the value of the optimal chirp parameter is independent of laser polarization and the energy gain could be insensitive to the sign of this parameter when the initial phase is optimally adjusted. In addition, utilizing the chirped laser pulse with optimized conditions for acceleration of an electron bunch reveals that the energy spectrum is shifted to considerably higher energies and the spatial distribution is significantly improved in a polarization-dependent manner. |
| Databáze: | OpenAIRE |
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