Valley G C
Appl Opt. 1979 Apr 1;18(7):984-7. doi: 10.1364/AO.18.000984.
Corrections to the long- and short-term (tilt removed) Strehl ratios of a laser beam propagating through atmospheric turbulence are given for turbulence with finite inner and outer scales. It is found that outer-scale corrections are important for long-term Strehl ratios, and inner-scale corrections are important for shortterm Strehl ratios. The results are applicable to near-ground propagation where the outer scale may be of the same order as the beam diameter and to upper atmospheric propagation where the inner scale may become a significant fraction of the beam diameter. The results are also useful for determining length scales for wave optics propagation codes, since such codes introduce artificial outer and inner scales due to finite grid size and mesh-point separation.
对于通过具有有限内尺度和外尺度的大气湍流传播的激光束，给出了长期和短期（去除倾斜）斯特列尔比的修正值。研究发现，外尺度修正对于长期斯特列尔比很重要，而内尺度修正对于短期斯特列尔比很重要。这些结果适用于外尺度可能与光束直径同阶的近地面传播以及内尺度可能占光束直径很大比例的高层大气传播。这些结果对于确定波动光学传播代码的长度尺度也很有用，因为此类代码由于有限的网格尺寸和网格点间距会引入人为的外尺度和内尺度。
