The analysis of budget link and free space optical system performances requires the calculation of several metrics of the atmospheric turbulence-affected collected light. In this work, assuming the collected light is focused into an optical fiber or over a sensor positioned in the focal plane, we use the ABCD ray-matrix representation to calculate the impact of atmospheric turbulence on the power in the fiber or power over the sensor. Calculation of such metrics requires the knowledge of the transmitted average power that enters the receiver aperture (power in the bucket) and the long-term beam spread in the focal plane, from which the Strehl ratio can be obtained.

中文翻译：

---

受大气湍流影响的激光束的光功率相关指标的焦平面分析

预算链路和自由空间光学系统性能的分析需要计算受大气湍流影响的收集光的多个指标。在这项工作中，假设收集到的光聚焦到光纤中或位于焦平面上的传感器上，我们使用 ABCD 射线矩阵表示来计算大气湍流对光纤中的功率或传感器上的功率的影响。计算此类指标需要了解进入接收器孔径的发射平均功率（桶中的功率）和焦平面中的长期波束扩展，从中可以获得斯特列尔比。