The results provide an appropriate description of a steady-state operating, generalized optical parametric oscillator with collinear phase matching, The plane wave theory has been derived to describe the intensity characteristics of an intracavity continuous-wave singly resonant optical parametric oscillator. 结果适合于描述稳态运行、一般化共线相位匹配的光学参量振荡器。推导了内腔连续波单共振光学参量振荡器的光强特性的平面波理论。