95 GHz准光模式转换器实验研究
Quasi-optical mode converter for 95 GHz gyrotron
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摘要: 介绍了采用95 GHz准光模式转换器将TE62模式转换为高斯波束的实验测试结果。准光模式转换器由螺旋切口的Vlasov辐射器、一个准抛物柱面反射镜和两个相位修正镜组成。将半径5.62 mm圆波导内的TE62模式转换为束腰直径22.4 mm的高斯波束。实验采用毫米波天线近场扫描测试系统测试，实验结果表明标量转换效率大于97%，矢量转换效率大于88%Abstract: This paper presents the experimental results of a 95 GHz quasi-optical mode converter. The test system is a near-field scanning system based on millimeter wave antenna. The mode converter includes a Vlasov launcher, a quasi-elliptical mirror and two phase correcting mirrors. It converts the TE62 mode in a circular waveguide of 5.62 mm radiusinto a Gaussian mode of 22.4 mm waist. The scalar correlation coefficient is 97.43%, and the vector correlation coefficient is 88.65%.
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Key words:
- quasi-optical /
- mode converter /
- phase correcting mirror /
- gyrotron
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