Paper 13134-12
Paper 13134-12
Temporal variability in magnetically actuated deformable mirror surface figure measured via interferometry
21 August 2024 • 9:30 AM - 9:50 AM PDT | Conv. Ctr. Room 16A
Abstract
Precise characterization of deformable mirrors (DMs) is crucial for optimizing wavefront sensing/control systems. This study employs a 4D PhaseCam 6000 interferometer to analyze the temporal behavior of a 97-actuator ALPAO DM under varying aberration levels. Measurements of RMS difference, peak-to-valley difference, and the first 37 Zernike polynomials change reveal a strong correlation between applied aberration and temporal variation. A trend of higher standard deviation is noticed in the applied aberration to the DM over time.
Presenter
Wyant College of Optical Sciences (United States)
Meghdoot Biswas is a first year graduate student in Optical Sciences at the James C. Wyant College of Optical Sciences, University of Arizona and a graduate research assistant at the Steward Observatory, University of Arizona. He is currently working under Prof. Ewan Douglas’ supervision on astronomical instrumentation. Prior to joining this university, he was awarded a B.Tech in Optics and Optoelectronics Engineering from the Department of Applied Optics and Photonics, University of Calcutta in 2023, where he was exposed to this wonderful field of astronomical optics. He was an Indian Academy of Sciences (INSA-IASc-NASI) Summer Research Fellow in 2022 and conducted research on wavefront sensing at the Indian Institute of Astrophysics, Bangalore. His research interests include telescope design, adaptive optics, wavefront sensing, fourier optics, image processing and astronomical instrumentation.