Phase shift induced by free electron laser interaction

Nishimori, Nobuyuki; Hajima, Ryoichi; Nagai, Ryoji

Free-Electron Laser (FEL) interaction with unbunched electrons at resonant energy induces a positive phase shift of the FEL field relative to the input phase. The positive phase shift corresponds to giving electrons positive energy detuning, and results in the FEL amplification. The zero small signal gain on resonance in low gain regime is related to the exponential growth in high gain regime by the positive phase shift.

Language	:	English
Journal	:	Free Electron lasers 2003
Volume	:
Number	:
Pages	:	p.II_21 - II_22
Publication Year/Month	:	2004/00
Meeting title	:	25th International Free Electron Laser Conference (FEL 2003)
Held date	:	2003/09
Location (city)	:	Tsukuba
Location (country)	:	Japan
Patent information	:
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DOI for research data	:
Keywords	:	Fel; Phase Shift; Amplification
Research Facility	:
Press Release	:
Article of JAEA R&D Review	:
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Registration No. : B20030677
JAEA Abstracts No. : 44000106
Paper Submission No. : 16806

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