Tunable radiation source by coupling laser-plasma-generated electrons to a periodic structure.
نویسندگان
چکیده
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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ورودعنوان ژورنال:
- Physical review letters
دوره 107 26 شماره
صفحات -
تاریخ انتشار 2011