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

Z. Jin, Z.L. Chen, H.B. Zhuo, A. Kon, M. Nakatsutsumi, H.B. Wang, B.H. Zhang, Y.Q. Gu, Y.C. Wu, B. Zhu, L. Wang, M.Y. Yu, Zheng-Ming Sheng

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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
Original languageEnglish
Article number265003
Number of pages5
JournalPhysical Review Letters
Publication statusPublished - 23 Dec 2011


  • tunable radiation source
  • coupling laser-plasma-generated electrons

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