An experimental study on phase compensation for turbulent effects with a 37-element adaptive optics system is performed in both a simulated turbulence cell and in a real atmosphere. The experimental results demonstrate that the compensated Strehl ratio <i>S</i><sub>0</sub>, which is influenced mainly by the deformable-mirror fitting error, has a functional form <i>S</i><sub>0</sub> = exp[−κ(<i>d</i>/<i>r</i><sub>0</sub>)<sup>5/3</sup>], where <i>r</i><sub>0</sub> is Fried’s coherence length and <i>d</i> is the average interval of the actuators on the deformable mirror. The fitting parameter κ is 0.45. Numerical simulations are also performed with the experimental parameters. The numerical results are in agreement with data obtained in the experiment, which shows that the direct-tilt phase-reconstruction method used in our four-dimensional simulation code is reasonable.
© 1998 Optical Society of America
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
Zhiben Gong, Yi Wu, Yingjian Wang, Chao Wang, Zaihong Hou, Yunkun Jiang, Wenhan Jiang, Xubin Wu, Chunhong Wang, and Hao Xian, "Phase-Compensation Experiment with a 37-Element Adaptive Optics System," Appl. Opt. 37, 4549-4552 (1998)