Design of a 140 GHz TE28,8 gyrotron quasi-optical mode converter
- 1College of Physics and Electronic Engineering, Taishan University
- 2Aerospace Information Research Institute, Chinese Academy of Sciences
Abstract
This paper designed a hybrid quasi-optical launcher suitable for the 140 GHz TE₂₈,₈ mode based on scalar diffraction integrals and fast Fourier transform theory. It employs the nine coupled modes of the Denisov-type launcher as objective functions and utilizes an adaptive optimization iterative algorithm to maximize the correlation coefficient between the internal wall field distribution and the objective functions, thereby generating arbitrarily shaped internal wall perturbation structures. As a result, the scalar Gaussian content at the radiation aperture reaches 99.2%, and the vector Gaussian content reaches 98.4%. Based on this design, a three-stage mirror system is developed using phase difference algorithms in conjunction with Gaussian beam propagation theory. This system achieves horizontal directional beam radiation with local phase correction. The output beam at the output window exhibits a scalar Gaussian content of 99.7% and a vector Gaussian content of 98.1%. Finally, an analysis was conducted on the installation error of the mirror.
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BibTeX
@article{zhao2026design,
title = {{Design of a 140 GHz TE28,8 gyrotron quasi-optical mode converter}},
author = {Guohui Zhao and Meng Wang and Lian Zhang and Mei Sun and Decheng Tian},
journal = {Scientific Reports},
year = {2026},
month = jul,
doi = {10.1038/s41598-026-62602-3},
url = {https://doi.org/10.1038/s41598-026-62602-3},
note = {CC BY},
}
RIS
TY - JOUR
TI - Design of a 140 GHz TE28,8 gyrotron quasi-optical mode converter
AU - Guohui Zhao
AU - Meng Wang
AU - Lian Zhang
AU - Mei Sun
AU - Decheng Tian
PY - 2026
DA - 2026/07/01
JO - Scientific Reports
DO - 10.1038/s41598-026-62602-3
UR - https://doi.org/10.1038/s41598-026-62602-3
AB - This paper designed a hybrid quasi-optical launcher suitable for the 140 GHz TE₂₈,₈ mode based on scalar diffraction integrals and fast Fourier transform theory. It employs the nine coupled modes of the Denisov-type launcher as objective functions and utilizes an adaptive optimization iterative algorithm to maximize the correlation coefficient between the internal wall field distribution and the objective functions, thereby generating arbitrarily shaped internal wall perturbation structures. As a result, the scalar Gaussian content at the radiation aperture reaches 99.2%, and the vector Gaussian content reaches 98.4%. Based on this design, a three-stage mirror system is developed using phase difference algorithms in conjunction with Gaussian beam propagation theory. This system achieves horizontal directional beam radiation with local phase correction. The output beam at the output window exhibits a scalar Gaussian content of 99.7% and a vector Gaussian content of 98.1%. Finally, an analysis was conducted on the installation error of the mirror.
SN - 2045-2322
ER -