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

Jin, Z. and Chen, Z.L. and Zhuo, H.B. and Kon, A. and Nakatsutsumi, M. and Wang, H.B. and Zhang, B.H. and Gu, Y.Q. and Wu, Y.C. and Zhu, B. and Wang, L. and Yu, M.Y. and Sheng, Zheng-Ming (2011) A tunable radiation source by coupling laser-plasma-generated electrons to a periodic structure. Physical Review Letters, 107. 265003. ISSN 0031-9007

[img]
Preview
PDF
PhysRevLett.107.265003.pdf
Final Published Version

Download (3MB)| Preview

    Abstract

    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