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本文将Kirchhoff-Fresnel积分方程变换到Fourier空间,求解后得到共焦不稳定腔解析形式的本征函数、本征值、共振条件与远场分布。本文所得Fourier空间中的本征函数形式很简单,可为进一步研究不稳定腔提供一个简便的出发点。The Kirchhoff-Fresnel integral equation is transformed into Fourier space and the analytical eigenfunctions, eigenvalus, resonance conditions and far field distributions are obtained. The form of eigenfunctions obtained in the Fourier space are very simple, this result might be used as a convenient start point for further investigation of the unstable optical resonator.
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