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Pae, Ki Hong
초강력 레이저과학 연구단
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Direct laser acceleration of electrons from a plasma mirror by an intense few-cycle Laguerre-Gaussian laser and its dependence on the carrier-envelope phase

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Title
Direct laser acceleration of electrons from a plasma mirror by an intense few-cycle Laguerre-Gaussian laser and its dependence on the carrier-envelope phase
Author(s)
Ki Hong Pae; Chul Min Kim; Vishwa Bandhu Pathak; Chang-Mo Ryu; Chang Hee Nam
Publication Date
2022-05
Journal
Plasma Physics and Controlled Fusion, v.64, no.5
Publisher
IOP Publishing Ltd
Abstract
© 2022 IOP Publishing Ltd.A direct acceleration scheme to generate high-energy, high-charge electron beams with an intense few-cycle Laguerre-Gaussian (LG) laser pulse was investigated using three-dimensional particle-in-cell simulations. In this scheme, an intense LG laser pulse was irradiated onto a solid density plasma slab. When the laser pulse is reflected, electrons on the target front surface are injected into the longitudinal electric field of the laser and accelerated further. We found that the carrier-envelope phase (CEP) of the few-cycle laser pulse plays a key role in the electron injection and acceleration process. Using a three-cycle LG laser pulse with a0=2 and an appropriate CEP, an about 60 pC electron beam could be obtained at a maximum energy of 16 MeV. In comparison, when a laser pulse with mismatched CEP was used, a total of 4 pC electron beam with a maximum energy of 3.5 MeV was obtained. Linear scaling of electron energy to the laser strength was shown up to a0=100 at which a quasi-monoenergetic electron beam of 850 MeV energy with a charge equal to 600 pC could be obtained. These results demonstrate that high-energy electron beams can be stably generated through direct laser acceleration using a CEP-controlled intense few-cycle LG laser pulse.
URI
https://pr.ibs.re.kr/handle/8788114/11408
DOI
10.1088/1361-6587/ac5a0a
ISSN
0741-3335
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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