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相位作为电磁场分布的重要信息，在回旋管准光模式变换器的设计中起着关键作用。文章围绕相位校正完成了170GHz,TE31,8模式回旋管准光模式变换器设计。基于标量衍射积分理论与快速傅里叶变换（FFT）方法，设计了混合型辐射器，该结构支持任意形式的内壁扰动，并在辐射口径处实现98.7%的矢量高斯含量。此外，结合高斯波束传播理论，利用相位差算法优化设计了三级镜面系统，有效提升了波束的横向输出效率与高斯模式纯度，并将结果与传统KatsenelenbaumSemenov(KS)算法进行对比分析。仿真结果表明，相位差算法校正效果更佳，最终波束在输出窗上的标量高斯含量可达99.6%，矢量高斯含量达98.2%。
Abstract：Phase plays a key role in the design of gyrotron quasi-optical mode converters because it provides important information about the electromagnetic field distribution. In this paper, a 170 GHz, TE31,8 mode gyrotron QOMC design has been completed around phase correction. A hybrid launcher has been designed based on the scalar diffraction integral theory and the fast Fourier transform(FFT) method. The structure supports arbitrary forms of internal wall perturbation and achieves a vectorial Gaussian content of 98.7% at the radial aperture. In addition, a three-stage mirror system is designed using a phase difference algorithm in conjunction with Gaussian beam propagation theory. The lateral output efficiency and Gaussian mode purity of the beam are effectively improved.The results are also analyzed in comparison with the traditional Katsenelenbaum-Semenov(KS) algorithm. The simulation results show that the phase difference algorithm correction is more effective. The final beam has a scalar Gaussian content of up to 99.6% and a vectorial Gaussian content of up to 98.2% on the output window.
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基本信息:
DOI：10.13922/j.cnki.cjvst.202509028
中图分类号:TL62
引用信息:
[1]田德成,张瑞,赵国慧,等.基于相位校正的新型回旋管准光模式变换器设计[J].真空科学与技术学报,2026,46(03):213-220.DOI:10.13922/j.cnki.cjvst.202509028.
基金信息:
国家自然科学基金青年基金项目（62301354）
2025-12-08
2025-12-08
2025-12-08