optical mode

The quasi-optical mode exciter with the method of quasi-optical conversion has high purity output mode, but its disadvantage is narrow bandwidth, low efficiency, complicated structure and many of its modules need high accuracy fabrication and assembling.

利用准光变换设计的准光模式激励器虽然其输出模式纯度高，但其输出为点频，频带极窄，效率较低，且部件多、结构复杂，各部件的加工装配精度要求高。

By selecting appropriate cavity configurations, the astigmatism of optical mode in spherical mirror folded cavities can be partially eliminated and regulated.

选择合适的腔结构，球面镜折迭腔中光模的象散可以部分地消除和调整。

In this paper, the coupling optical mode amplitude equations under the perturbation of magnetostatic wave ( MSW) have been derived with a new perturbation method;

利用新的微扰方法导出了层状YIG薄膜波导中静磁波微扰下的光模式耦合振幅方程；