2 June 1989 Experimental Results From A Second Harmonic Submillimeter Gyrotron
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At M.I.T. a submillimeter gyrotron is being operated using a waveguide cavity with an iris at its output end. This experiment operated at second harmonic for 1-2 μsec pulses with a 75 kV, 10 A electron beam. Second harmonic emission has been observed at 13 frequencies from 301 GHz to 503 GHz with output powers of 1-22 kW and a 15 MHz frequency bandwidth. The highest output power was 22 kW with an efficiency of 3.5 % at 467 GHz and an output power of 15 kW with 6% efficiency was obtained at 417 Ghz. A variety of diagnostics that were used to discriminate between fundamental and second harmonic emission will be discussed.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. E Spira-Hakkarainen, K. E. Kreischer, R. J. Temkin, "Experimental Results From A Second Harmonic Submillimeter Gyrotron", Proc. SPIE 1059, Space Sensing, Communications, and Networking, (2 June 1989); doi: 10.1117/12.951715; https://doi.org/10.1117/12.951715


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