Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 26, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.265003
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Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- National Natural Science Foundation of China [10976031, 10975185, 10835003, 11175253]
- National Basic Research Program of China [2007CB310406, 2007CB815100, 2009GB105002]
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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.
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