Tunable radiation source by coupling laser-plasma-generated electrons to a periodic structure |
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| 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 |
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| Affiliation: | Photon Pioneers Center, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871 Japan. |
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| 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. |
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