Proposal for generation of high-intensity monochromatic Cherenkov radiation in THz range by femtosecond electron bunches in impurity-doped semiconductor tube

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• 作者：Koichi Kan ; Jinfeng Yang ; Kimihiro Norizawa ; Takafumi Kondoh ; Yoichi Yoshida ; Atsushi Ogata  ; ;   ; ^{ogata@post.kek.jp}
• 关键词：Attosecond electron bunches ; Cherenkov radiation ; Coherent radiation ; THz radiation ; Impurity-doped semiconductor
• 刊名：Radiation Physics and Chemistry
• 出版年：2011
• 出版时间：December 2011
• 年：2011
• 卷：80
• 期：12
• 页码：1323-1326
• 全文大小：354 K

文摘

A novel method to generate high-power THz radiation is proposed. If a beam with a bunch length on the order of 100 fs is injected into an electron¨Chole plasma of a semiconductor with a plasma frequency on the order of THz, THz wake fields are coherently generated. If the beam moves on the axis of a hollow tube covered by a metal, the frequency spectrum of the radiation is composed of discrete components. Monochromatic radiation is obtained by making only the lowest frequency component coherent.