Sources of Coherent Terahertz Radiation

Bratman, V. L.; Bandurkin, I. V.; Думеш, Б. С.; Fedotov, A. É.; Kalynov, Yu. K.; Kolganov, N. G.; Мануилов, В. Н.; Rusin, F. S.; Самсонов, С. В.; Savilov, A. V.

doi:10.1063/1.2158799

Cited by 23 publications

(7 citation statements)

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“…The lower mirror is a periodic grating surface to provide slow waves that will couple with the electron beam [3]. The reviews of the orotron can be found in [4]- [6]. Reference [7] describes an example of the application of an orotron.…”

Section: Introductionmentioning

confidence: 99%

Self-Fields in a Planar Orotron

Antonsen

Nusinovich

2008

IEEE Trans. Plasma Sci.

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The goal of producing terahertz radiation from miniature electron beam devices has refocused interest in orotrons. The efficiency of these devices improves with increasing current density. However, with increasing current density, self-fields become more important. In this paper, the theory of self-fields in a planar orotron is developed. We find that the parameters of the grating, which provides the slow wave fields that interact with the beam, also affect the self-fields, which give rise to the slow space-charge wave. Thus, the optimization of the grating parameters requires consideration of their impact on the dispersive properties of the slow space-charge wave. We present a sample structure design that is appropriate for a planar orotron.Index Terms-Beam-wave interaction, orotron, self-fields.

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Section: Introductionmentioning

confidence: 99%

Self-Fields in a Planar Orotron

Antonsen

Nusinovich

2008

IEEE Trans. Plasma Sci.

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“…These are Orotrons [1], or Diffraction Radiation Generators [2], and varieties of gyrodevices which basically operate at high cyclotron harmonics. Both types of devices are now under intensive development in the Institute of Applied Physics (orotronsin collaboration with "VNIIFTRI", Mendeleevo and Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow region) [3].…”

Section: Introductionmentioning

confidence: 99%

Vacuum Electron Sources of Terahertz Radiation

Bratman

2006

2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics

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“…The electron beam with particle energy of 300-400 keV can excite the surface -mode of a rectangular grating having a length of 40 mm, a period of 1.6 mm, and a slot depth of 0.5 mm. For a current of 140 A ͑which is close to the operating current in the experiment 19 ͒, the starting conditions are fulfilled only for the surface wave, and the orotron mode is excited due to the frequency multiplication effect. In this regime, the synchronization of radiation occurs, and the output power for the orotron mode exceeds 200 kW, which corresponds to the value observed in the experiment.…”

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confidence: 99%

“…17 Such a situation was observed in our recent experiment with a relativistic orotron. 19 While at the voltage of 400 kV the planned orotron generation take place, at the lower voltage ͑U = 350 kV͒ high-power radiation with a frequency of 79 GHz ͑which coincides with the calculated wavelength of the surface -mode͒ was obtained with a mixture of 158 GHz radiation. These two frequencies were precisely divisible, which was confirmed by mixing the corresponding signals in a semiconductor detector with cubic nonlinearity.…”

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confidence: 99%