Theoretical and Experimental Studies on Novel High-Gain Seeded Free-Electron Laser Schemes
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Beschreibung
This dissertation focuses on the study of novel high-gain free-electron laser (FEL) operation schemes with external seed lasers. The technique of manipulating the phase space of the electron beam, which is widely used in novel seeded FEL schemes, is systematically studied. Several novel FEL schemes are proposed for the generation of intense coherent FEL pulses with short wavelength, sub-femtosecond pulse length or multiple carrier frequency properties, which meet the needs of FEL users. Results of experiments are described for the recently proposed FEL schemes such as echo-enabled harmonic generation and cascaded high-gain harmonic generation. New photon/electron beam diagnostic methods are also developed for these experiments and future high-gain FEL facilities.
This dissertation focuses on the study of novel high-gain free-electron laser (FEL) operation schemes with external seed lasers. The technique of manipulating the phase space of the electron beam, which is widely used in novel seeded FEL schemes, is systematically studied. Several novel FEL schemes are proposed for the generation of intense coherent FEL pulses with short wavelength, sub-femtosecond pulse length or multiple carrier frequency properties, which meet the needs of FEL users. Results of experiments are described for the recently proposed FEL schemes such as echo-enabled harmonic generation and cascaded high-gain harmonic generation. New photon/electron beam diagnostic methods are also developed for these experiments and future high-gain FEL facilities.
Nominated as Excellent Doctoral Dissertation by the Chinese Academy of Sciences in 2014 Presents a systematic study of precise electron beam phase space manipulation methods at the optical wavelength scale Proposes a number of novel high-gain free-electron laser schemes for generating intense, fully coherent, short-wavelength radiation Reports how the slice energy spread of the electron beam can be accurately measured by using the coherent harmonic generation technique Includes supplementary material: sn.pub/extras
Autor*in
Chao Feng
Themen in »Theoretical and Experimental Studies on Novel High-Gain Seeded Free-Electron Laser Schemes«
Echo-enabled harmonic generation Free-electron laser experiments Generation High-gain Laser High-gain harmonic generation Laser-electron beam interaction Multi-color Generation Novel High-gain FEL Scheme Phase-merging enhanced harmonic Prize Winning Dissertation Slice Energy Spread