@inproceedings{3594568f42474b20be5145f7604da155,
title = "Temporal variability in magnetically actuated deformable mirror surface figure measured via interferometry",
abstract = "Precise characterization of deformable mirrors (DMs) is crucial for optimizing wavefront sensing and control systems. This study employs a 4D PhaseCam 6000 interferometer to investigate the temporal behavior of a 97-actuator ALPAO DM across varying levels of aberration. Analysis of root mean square (RMS) differences and changes in the first 37 Zernike polynomials demonstrates a clear correlation between applied aberrations and temporal variability. We observe a consistent pattern: as the applied magnitude of the RMS to the DM increases, so does the disparity between maximum and minimum RMS values across all configurations, with exceptions noted in cases involving coma and scenarios without applied aberrations (DM powered on and DM powered off). Notably, in 11 out of 14 measurements, either oblique astigmatism or vertical astigmatism exhibits the highest variability, often appearing together, underscoring their collective impact on DM performance over time.",
keywords = "Deformable mirror, DM surface, Instrumentation, Interferometric analysis, Temporal dynamics of DM shapes",
author = "Meghdoot Biswas and Hyukmo Kang and Ewan Douglas and Daewook Kim",
note = "Publisher Copyright: {\textcopyright} 2024 SPIE.; Optical Manufacturing and Testing 2024 ; Conference date: 20-08-2024 Through 22-08-2024",
year = "2024",
doi = "10.1117/12.3028231",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Daewook Kim and Heejoo Choi and Heidi Ottevaere",
booktitle = "Optical Manufacturing and Testing 2024",
}