An inverse-design-based arm locking controller for space gravitational wave detector

Yi Zhang; Tong Wang; Mingzhe Li; Ming Xin

doi:10.1117/12.2687313

27 November 2023 An inverse-design-based arm locking controller for space gravitational wave detector

Yi Zhang, Tong Wang, Mingzhe Li, Ming Xin

Proceedings Volume 12771, Advanced Sensor Systems and Applications XIII; 127711I (2023) https://doi.org/10.1117/12.2687313
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

Since gravitational waves are extremely weak, the frequency noise of the lasers in space-based gravitational wave detectors need to be substantially reduced. One of the key technologies for this laser frequency reduction is arm locking. Currently, all the reported controllers in arm locking have an inherent tradeoff between the frequency noise suppression ratio and feedback stability. In this paper, for the first time the inverse design idea is introduced into single arm locking controller. By utilizing a multi-parameter co-optimization scheme, the frequency noise suppression ratio and the feedback stability can be optimized simultaneously. This work can be generalized to different kinds of arm locking controller design and will effectively improve the sensitivity of the space-based gravitational wave detector.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yi Zhang, Tong Wang, Mingzhe Li, and Ming Xin "An inverse-design-based arm locking controller for space gravitational wave detector", Proc. SPIE 12771, Advanced Sensor Systems and Applications XIII, 127711I (27 November 2023); https://doi.org/10.1117/12.2687313

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