Experimental operation of a cyclotron autoresonance maser oscillator at the second harmonic

S J Cooke, A W Cross, W He, A D R Phelps

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Experimental results are presented of the first cyclotron autoresonance maser oscillator operated using the second harmonic of the cyclotron frequency. An interaction efficiency of 3.9% has been measured at a frequency of 14.27 GHz, using an 80 ns pulsed, 14 A electron beam of energy 300 keV, to produce a coherent microwave power of 170 kW. Emission occurred at 3.7 times the relativistic cyclotron frequency, due to the large Doppler frequency increase and second harmonic interaction.

Original languageEnglish
Pages (from-to)4836-4839
Number of pages4
JournalPhysical Review Letters
Issue number23
Publication statusPublished - 2 Dec 1996


  • second harmonic generation
  • gyro-devices
  • maser
  • microwave generation
  • cyclotron maser
  • cyclotron instability
  • cyclotron maser instability
  • cyclotron resonance maser

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