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- Title
CoolMomentum-SPGD Algorithm for Wavefront Sensor-Less Adaptive Optics Systems.
- Authors
Zhang, Zhiguang; Luo, Yuxiang; Yang, Huizhen; Su, Hang; Liu, Jinlong
- Abstract
Instead of acquiring the previous aberrations of an optical wavefront with a sensor, wavefront sensor-less (WFSless) adaptive optics (AO) systems compensate for wavefront distortion by optimizing the performance metric directly. The stochastic parallel gradient descent (SPGD) algorithm is pervasively adopted to achieve performance metric optimization. In this work, we incorporate CoolMomentum, a method for stochastic optimization by Langevin dynamics with simulated annealing, into SPGD. Numerical simulations reveal that, compared with the state-of-the-art SPGD variant, the proposed CoolMomentum-SPGD algorithm achieves better convergence speed under various atmospheric turbulence conditions while requiring only two tunable parameters.
- Subjects
WAVEFRONT sensors; ADAPTIVE optics; OPTICAL aberrations; ATMOSPHERIC turbulence; SIMULATED annealing; ALGORITHMS
- Publication
Photonics, 2023, Vol 10, Issue 2, p102
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics10020102