Study on Phase Correction of Electromagnetic Wave Propagation in Gyrotron

In this paper, the KS algorithm is introduced. The Katsenelenbaum-Semenov Algorithm(KSA) is applied to the phase correction of gyrotron quasi-optical mode converter. Two models with one phase-correcting mirror and two phase-correcting morrors are designed respectively based on KSA in this paper. Five 94 GHz Gaussian fields with different ellipticity and astigmatism are incident into the two models at the same incident angle. As an example, a phase correction mirror is designed for a 94 GHz gyrotron quasi-optical mode converter based on KSA algorithm. After phase correction, the vector and scalar contents of Gaussian fields are increased by 1.02% and 9.72% respectively.