Free Electron Laser and Superconductivity

VIEWPOINT Free - Electron Laser Does

L ight is perhaps the pre-eminent scientific tool, not just for observing objects but also for manipulating them. Near the visible part of the spectrum, conventional laser light is especially important thanks to its coherence and tunability, which give scientists fine control of the light beam in space and frequency. But conventional lasers do not operate in the extreme ultraviolet (XUV) wavele...

Anomalous free electron laser interaction

Free electron lasers (FELs) are considered, typically, as fast wave devices. The normal FEL interaction satisfies the tuning condition oDðkz þ kWÞVz , where o and kz are the em-wave angular frequency and longitudinal wave number, respectively, Vz is the electron axial speed, and kW is the wiggler periodicity. This paper presents an anomalous FEL interaction, which may occur in slow-wave FELs (i...

Integrated free-electron laser schemes

The integrated-FEL concept is proposed as an alternative approach for the discrete compact-FELs [1]. In the proposed integrated-FEL, the accelerator and the wiggler are integrated for the sake of compaction. Two examples of integrated-FEL schemes are presented here briefly in order to demonstrate the FEL-integration concept: a) A functional integration scheme is shown in fig. 1. Two electron be...

The Free Electron Laser: Properties and Prospects

Novel electron accelerator techniques can be used to create free electron lasers in a wide wave length interval extending to the X-ray region, i.e. providing an X-ray laser. Due to the coherent emission, very large intensities can be obtained, with peak brilliance ten orders of magnitude higher than in conventional synchrotron radiation. This opens completely new prospects for sciences that stu...

Electron tunneling and superconductivity.