DESIGN OF A RESONATOR FOR THE CSU THz FEL
نویسنده
چکیده
A typical confocal resonator for THz radiation produced by an FEL will have a waist that is larger than the gap of the undulator. Hence waveguiding is required. Here we consider a resonator consisting of two spherical mirrors and a cylindrical waveguide in between. The radii of curvature for the mirrors are chosen to image the ends of the waveguide onto themselves. We discuss the properties of the cold resonator for a wavelength range from 200 to 600μm and show that the outer radii of the mirrors can be used to control the mode content inside the cylindrical waveguide.
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DESIGN OF A RESONATOR FOR THE CSU THz FEL
A typical confocal resonator for THz radiation produced by an FEL will have a waist that is larger than the gap of the undulator. Hence waveguiding is required. Here we consider a resonator consisting of two spherical mirrors and a cylindrical waveguide in between. The radii of curvature for the mirrors are chosen to image the ends of the waveguide onto themselves. We discuss the properties of ...
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