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2018 | OriginalPaper | Buchkapitel

13. Optical Klystrons and High-Gain Harmonic Generation

verfasst von : H. P. Freund, T. M. Antonsen Jr.

Erschienen in: Principles of Free Electron Lasers

Verlag: Springer International Publishing

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Abstract

Optical klystrons have been in use for decades, and the first use was in an ultraviolet free-electron laser oscillator. An optical klystron (OK) is composed of a modulator wiggler that imposes a velocity modulation on the electrons followed by a magnetic dispersive section that enhances the modulation prior to injection into a radiator wiggler that takes the interaction with the modulation-enhanced electrons to saturation. The magnetic dispersive element is, typically, a three- or four-dipole chicane. The radiator can be tuned to the fundamental or a harmonic of the modulator, in which case the interaction is referred to as high-gain harmonic generation (HGHG). In this chapter, we discuss these concepts and simulations of representative configurations.

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Metadaten
Titel
Optical Klystrons and High-Gain Harmonic Generation
verfasst von
H. P. Freund
T. M. Antonsen Jr.
Copyright-Jahr
2018
DOI
https://doi.org/10.1007/978-3-319-75106-1_13

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