Control algorithms for dual-wavefront sensor single-conjugate adaptive optics
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866918298473463808 |
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| author | Sengupta, Aditya R. Poyneer, Lisa A. Gerard, Benjamin L. Jensen-Clem, Rebecca Lemmer, Aaron J. |
| author_facet | Sengupta, Aditya R. Poyneer, Lisa A. Gerard, Benjamin L. Jensen-Clem, Rebecca Lemmer, Aaron J. |
| contents | High-contrast imaging systems using active control with adaptive optics (AO) are often limited by non-common path (NCP) aberrations that are seen only at the final science image. AO systems employing focal-plane wavefront sensors (FP-WFSs) are able to simultaneously correct NCP aberrations and measure science images, but they typically require a second stage of control that adds system cost and complexity. We present control algorithms to augment AO systems with FP-WFSs within their existing control setup. We demonstrate inter-arm NCP aberration transfer can be mitigated through temporal filtering, present frequency- and time-domain validation of controller stability and performance, and discuss the optimality of the chosen controllers. This work will enable the development, testing, and installation of FP-WFS technologies for direct imaging of exoplanets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_14531 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Control algorithms for dual-wavefront sensor single-conjugate adaptive optics Sengupta, Aditya R. Poyneer, Lisa A. Gerard, Benjamin L. Jensen-Clem, Rebecca Lemmer, Aaron J. Instrumentation and Methods for Astrophysics High-contrast imaging systems using active control with adaptive optics (AO) are often limited by non-common path (NCP) aberrations that are seen only at the final science image. AO systems employing focal-plane wavefront sensors (FP-WFSs) are able to simultaneously correct NCP aberrations and measure science images, but they typically require a second stage of control that adds system cost and complexity. We present control algorithms to augment AO systems with FP-WFSs within their existing control setup. We demonstrate inter-arm NCP aberration transfer can be mitigated through temporal filtering, present frequency- and time-domain validation of controller stability and performance, and discuss the optimality of the chosen controllers. This work will enable the development, testing, and installation of FP-WFS technologies for direct imaging of exoplanets. |
| title | Control algorithms for dual-wavefront sensor single-conjugate adaptive optics |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2601.14531 |