Optical and Electron Beam Requirements for an Optical Undulator FEL : Techniques, Instrumentations nad Measurement

概要

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Counterpropagating strong electromagnetic radiation is interesting as a short-period "optical undulator". This work presents a basic discussion concerning the requirement for electron beam quality in an optical undulator FEL. In the Compton and cold electron beam regime, the emittance ε of the electron beam is limited to be γε<0.16×(1+K^2 / 2)^<3/2> / √<N>K×λ_U at the beam waist of the optical undulator of which the field is produced by focusing electromagnetic radiation such as a high-power molecular laser. Further discussion suggests that a high-quality, long-pulsed electron beam from UCSB's accelerator might promise FEL operation in the ultraviolet or shorter wavelength regions using a high-power CO_2 laser undulator.
社団法人応用物理学会の論文
1988-04-20