A dual-frequency quasi-optical output system for a THz gyro-multiplier

Xiang Li, Xiaoming Liu, Yasir Alfadhl, Kevin Ronald, Wenlong He, Adrian Cross, Xiaodong Chen

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper presents the investigation of a quasi-optical output system for a fourth-harmonic gyro-multiplier in the THz band through geometric optic analysis and three-dimensional full-wave simulation. The output system of the gyro-multiplier needs not only to transfer two high-order waveguide modes into the quasi-Gaussian beams, but also to separate the two beams. A dual-frequency quasi-optical mode converter (DQMC) and a frequency selective surface (FSS) are employed to achieve both goals within this system. Our study has shown that the optimal design of the DQMC requires a special mode selection in the gyro-multiplier. The high-pass FSS is designed, fabricated, and experimentally verified by a THz-TDS system. We have also demonstrated that the designed FSS is capable of handling the high-power output from the gyro-multiplier.

LanguageEnglish
Pages674-681
Number of pages8
JournalIEEE Transactions on Terahertz Science & Technology
Volume6
Issue number5
Early online date13 Jul 2016
DOIs
Publication statusPublished - 30 Sep 2016

Fingerprint

Frequency selective surfaces
multipliers
selective surfaces
output
Gaussian beams
converters
Optics
Waveguides
optics
waveguides
harmonics
simulation

Keywords

  • frequency selective surface (FSS)
  • gyro-multiplier
  • output systems
  • quasi-optical mode converter
  • mirrors
  • optical waveguides
  • scattering
  • geometrical optics
  • gyrotrons
  • harmonic analysis

Cite this

Li, Xiang ; Liu, Xiaoming ; Alfadhl, Yasir ; Ronald, Kevin ; He, Wenlong ; Cross, Adrian ; Chen, Xiaodong. / A dual-frequency quasi-optical output system for a THz gyro-multiplier. In: IEEE Transactions on Terahertz Science & Technology. 2016 ; Vol. 6, No. 5. pp. 674-681.
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A dual-frequency quasi-optical output system for a THz gyro-multiplier. / Li, Xiang; Liu, Xiaoming; Alfadhl, Yasir; Ronald, Kevin; He, Wenlong; Cross, Adrian; Chen, Xiaodong.

In: IEEE Transactions on Terahertz Science & Technology, Vol. 6, No. 5, 30.09.2016, p. 674-681.

Research output: Contribution to journalArticle

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