High-gain Cherenkov oscillator driven by supercurrent

Igor V. Smetanin

doi:10.1117/12.335848

5 January 1999 High-gain Cherenkov oscillator driven by supercurrent

Igor V. Smetanin

Proceedings Volume 3686, Laser Optics '98: Gas, Liquid, and Free-Electron Lasers; (1999) https://doi.org/10.1117/12.335848
Event: Laser Optics '98, 1998, St. Petersburg, Russian Federation

Abstract

It is proposed the short-wavelength high-gain Cherenkov oscillator driven by supercurrent. In this concept, thin superconductor film, carrying dc current, is situated within a slow-wave structure (dielectric superlattice in a waveguide). It is shown that an amplification of the electromagnetic wave is possible when the wave phase velocity is close to the characteristic diffusion velocity of the order parameter phase. The small-signal exponential gain coefficient is calculated. Estimates show the proposed scheme be promising source of coherent THz radiation.

Citation Download Citation

Igor V. Smetanin "High-gain Cherenkov oscillator driven by supercurrent", Proc. SPIE 3686, Laser Optics '98: Gas, Liquid, and Free-Electron Lasers, (5 January 1999); https://doi.org/10.1117/12.335848

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