1 October 1991 Operation of the sapphire Cherenkov laser
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Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 15766Q (1991) https://doi.org/10.1117/12.2297955
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland
Abstract
This paper reports the first operation of a Sapphire-based Cerenkov Free Electron Laser (CFEL). The CFEL is a tunable source of coherent millimeter and sub-millimeter radiation. The phase velocity of light in Sapphire is about one tenth of that in free space so that Cerenkov radiation is obtained at modest electron beam energies; our electron gun supplies 10's of A/cm2 in the 20 to 100 keV range. The Cerenkov emission is confined by the resonator and can build to watts of power. The resonator geometry is critical both in terms of a passive cavity Q and because of its role in the electron/field interaction. Frequency, oscillation threshold current, and power have been measured.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
E. E. Fisch, E. E. Fisch, } "Operation of the sapphire Cherenkov laser", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 15766Q (1 October 1991); doi: 10.1117/12.2297955; https://doi.org/10.1117/12.2297955
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