Numerical Simulation of Thermal-Blooming Phase Compensation

Abstract

Abstract:

The numerical simulation method of thermal blooming adaptive optics (AO) phase compensation is studied. Collimated beam instantaneous thermal blooming phase compensation is simulated by using the laser atmospheric propagation four-dimension (4-D) code which is independently developed. The effect of deformable mirror (DM) actuators layout on the phase compensation efficiency under different thermal blooming strengh is numerically analyzed. The result shows that the layout of DM actuators has great effect on the AO system close-loop control stability. When the layout of DM actuators is different, the variance of DM actuators commands is also different. The proper layout of DM actuator can improve the AO system close-loop control stability, increase the threshold value of phase compensation instability (PCI).

Key words: adaptive optics, thermal blooming, deformable mirror actuators layout, phase compensation instability, numerical simulation

CLC Number:

TN012
O439

YAN Wei, CHEN Zhi-Hua, DU Tai-Jiao. Numerical Simulation of Thermal-Blooming Phase Compensation[J]. Journal of Atmospheric and Environmental Optics, 2014, 9(4): 257-262.

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