本文提出了一种能够产生中空环形激光光束的新型圆筒形轴对称四镜折叠组合腔的设计方案。利用光学传输矩阵方法处理了光束在光谐振腔中的传播,得出腔的稳定性条件。由高斯光束在腔内的自再现条件,描述了腔内腔外光束传输特性,同时对近场和远场光束特性进行了数值计算和模拟。 In this paper, a novel cylindrical axisymmetric four-mirror folding combination cavity that can generate a hollow annular laser beam is proposed. The optical transmission matrix is ​​used to deal with the propagation of the light beam in the optical resonator. The stability of the cavity is obtained. Gaussian beam self-reproducing conditions in the cavity, describes the lumen cavity outside the beam transmission characteristics, while the near-field and far-field beam characteristics were numerically calculated and simulated.