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Analysis of a holographic laser adaptive optics system using a deformable mirror
Abstract:
We describe a closed-loop holographic laser adaptive optics system (HLAOS) based on a holographic wavefront sensor (HWFS) and 21-element continuous-surface piezoelectric deformable mirror (DM). The principle behind HWFSs is described, and then the response sensitivity and crosstalk effect on the lowest 12 Zernike modes of aberration are analyzed. Next, the wavefront-correction capability of the 21-element DM is analyzed. The closed-loop correction of the HLAOS to a static aberration is then numerically simulated. We report a practical implementation of the HLAOS and compare the aberration-compensation effect with a traditional adaptive optics system based on a 37-unit Shark-Hartmann sensor. The practically relevant parameters are analyzed and the experimental results show that an HLAOS using a piezoelectric DM can achieve a correction capability comparable to that of a traditional adaptive optics system.
