Use of Dynamical Undulator Mechanism to Produce Short Wavelength Radiation in Volume FEL (VFEL)

Details Use of Dynamical Undulator Mechanism to Produce Short Wavelength Radiation in Volume FEL (VFEL) Use of Dynamical Undulator Mechanism to Produce Short Wavelength Radiation in Volume FEL (VFEL)

2002-09-06

arxiv.org/abs/physics/0209028v1

Physics

Optics

2 eps figures, to be presented at FEL2002

Scientific paper

10.1016/S0168-9002(03)00830-1

VFEL lasing in system with dynamical undulator is described. In this system radiation of long wavelength creates the undulator for lasing on shorter wavelength. Two diffraction gratings with different spatial periods form VFEL resonator. The grating with longer period pumps the resonator with long wavelength radiation to provide necessary amplitude of undulator field. The grating with shorter period makes mode selection for short wavelength radiation. Lasing of such a system in terahertz frequency range is discussed.

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