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The design and fabrication challenges in the first ever attempt to realize a 1-THz vacuum tube amplifier are described. Implementation of innovative solutions including a slow-wave structure in the form of a double corrugated waveguide, lateral tapered input and output couplers, deep X-ray LIGA fabrication process, and a cascade architecture of the backward wave amplifier are discussed. New knowledge...
The realization of a 1-THz cascade backward wave amplifier (C-BWA) represents a breakthrough in European technology in the THz vacuum electron device field. The huge design and fabrication obstacles solved by the innovative solutions devised during the three years of the OPTHER project added new knowledge over the state-of the-art1.
A state-of-the-art 1 THz cascade backward wave amplifier was fabricated in the frame of the FP7 European Community OPTHER (Optically driven Terahertz amplifier) project. The huge theoretical and technological effort to realize an amplifier at a frequency of 1 THz has created new knowledge and advancements in the field. A double corrugated waveguide was adopted as the slow wave structure to support...
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