Work

Beam Jitter Suppression Method for Large-Aperture Tip-Tilt Mirrors With Non-Negligible Resonance

Year: 2025

Type: article

Abstract: Effective control of large-aperture tip-tilt mirrors (TTMs) has been a pressing concern in beam stabilization due to the influence of their internal mechanical resonance. To the best of our knowledge, this Letter reports a new high-efficiency actor-critic (HEAC) scheme to effectively eliminate the impact of mechanical resonance on jitter suppression stabilization and performance. Moreover, HEAC features rapid deployment and training that rely solely on online noisy measurements through the establishment of a specific tracking control problem, the decoupling of the unknown system parameters, and the design of a quadratic homogeneous polynomial basis function network. The experimental results demonstrate that the HEAC has successfully achieved stable and efficient suppression of jitter near the resonance peak or close to the Nyquist frequency for a$\Phi ~405$mm aperture TTM.

Source: IEEE Photonics Technology Letters

DOI: 10.1109/lpt.2025.3554761

Authors: Sicheng Guo, Tao Cheng, Kangjian Yang, Lingxi Kong, Shuai Wang, Ping Yang

Language: English

Topic: Adaptive optics and wavefront sensing

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,645

Funder: National Natural Science Foundation of China

Awards: G4987265639, G6910150701