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2024 Photonics & Electromagnetics Research Symposium (PIERS), 2024, p.1-6
2024
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Autor(en) / Beteiligte
Titel
Modeling of Selective Photonic-structure Cavities for Sub-terahertz High-cyclotron-harmonic Gyrotrons
Ist Teil von
  • 2024 Photonics & Electromagnetics Research Symposium (PIERS), 2024, p.1-6
Ort / Verlag
IEEE
Erscheinungsjahr
2024
Quelle
IEEE Xplore
Beschreibungen/Notizen
  • Typically, cavities of sub-terahertz electron cyclotron masers (gyrotrons) have oversized dimensions. That leads to a problem of the mode selectivity in the process of realization of gyrotrons operating at high cyclotron harmonics. In this work, we study a cavity based on a photonic structure formed by two parallel corrugated mirrors acting as two diffraction gratings. Such a system supports only high-Q transverse modes with cutoff frequencies placed in a narrow band close to the corresponding Bragg-type resonance. In this work, a 2D model of a 90GHz Bragg-type gyrotron cavity has been developed and simulated. On the basis of HFSS modeling, the data of eigenfrequencies and Q-factors for such a system are systematized. In addition, estimations for starting currents of gyrotrons based on the photonic-structure cavity are obtained.
Sprache
Englisch
Identifikatoren
eISSN: 2831-5804
DOI: 10.1109/PIERS62282.2024.10618656
Titel-ID: cdi_ieee_primary_10618656

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