Tunable radiation source by coupling laser-plasma-generated electrons to a periodic structure

Near-infrared radiation around 1000 nm generated from the interaction of a high-density MeV electron beam, obtained by impinging an intense ultrashort laser pulse on a solid target, with a metal grating is observed experimentally. Theoretical modeling and particle-in-cell simulation suggest that the...

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Bibliographic Details
Published in:Physical review letters 2011-12, Vol.107 (26), p.265003-265003, Article 265003
Main Authors: Jin, Z, Chen, Z L, Zhuo, H B, Kon, A, Nakatsutsumi, M, Wang, H B, Zhang, B H, Gu, Y Q, Wu, Y C, Zhu, B, Wang, L, Yu, M Y, Sheng, Z M, Kodama, R
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAMS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COMPUTERIZED SIMULATION
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
INFRARED RADIATION
LASERS
LEPTON BEAMS
LEPTONS
MEV RANGE
NEAR INFRARED RADIATION
PARTICLE BEAMS
PERIODICITY
PLASMA
PULSES
RADIATION SOURCES
RADIATIONS
SIMULATION
VARIATIONS
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Summary:Near-infrared radiation around 1000 nm generated from the interaction of a high-density MeV electron beam, obtained by impinging an intense ultrashort laser pulse on a solid target, with a metal grating is observed experimentally. Theoretical modeling and particle-in-cell simulation suggest that the radiation is caused by the Smith-Purcell mechanism. The results here indicate that tunable terahertz radiation with tens GV/m field strength can be achieved by using appropriate grating parameters.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.107.265003