29 July 2003 Development of backward-wave oscillators for terahertz applications
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Calabazas Creek Research, Inc. is funded by the National Aeronautics and Space Administration to develop advanced backward wave oscillators that incorporate energy recovery, air cooling and improved performance. An improved coupler transforms the generated RF power to a high-purity, Gaussian output mode. The construction of a 600-700 GHz BWO is currently underway with higher frequency sources in development. Simulations predict 6-8 mW of RF power over a 100 GHz bandwidth.
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R. Lawrence Ives, Carol Kory, Michael Read, Jeff Neilson, Malcolm Caplan, Nikolai Chubun, Steve Schwartzkopf, Ron Witherspoon, "Development of backward-wave oscillators for terahertz applications", Proc. SPIE 5070, Terahertz for Military and Security Applications, (29 July 2003); doi: 10.1117/12.506905; https://doi.org/10.1117/12.506905

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