Making the unmodulated Pyramid wavefront sensor smart-Closed-loop demonstration of neural network wavefront reconstruction with MagAO-X
Almost all current and future high-contrast imaging instruments will use a Pyramid wavefront
sensor (PWFS) as a primary or secondary wavefront sensor. The main issue with the PWFS …
sensor (PWFS) as a primary or secondary wavefront sensor. The main issue with the PWFS …
[PDF][PDF] High-contrast spectroscopy of exoplanet atmospheres
R Landman - Astronomy & Astrophysics, 2024 - scholarlypublications …
Cover: Design by Mike Blauw and Rico Landman. Front: Panorama of Paranal Observatory
with the 4 unit telescopes (image credit: Y. Beletsky/ESO), along with an artist illustration of …
with the 4 unit telescopes (image credit: Y. Beletsky/ESO), along with an artist illustration of …
Hybrid approach for deformable mirror online system identification using RLS algorithm and adaptive forgetting factor optimization
MA Aghababayee, M Mosayebi, H Saghafifar - Optics Express, 2024 - opg.optica.org
In this study, an online system identification (SI) approach based on a recursive least
squares algorithm with an adaptive forgetting factor (AFFRLS) is proposed to accurately …
squares algorithm with an adaptive forgetting factor (AFFRLS) is proposed to accurately …
[HTML][HTML] Telescope Alignment Method Using a Modified Stochastic Parallel Gradient Descent Algorithm
M Li, X Liu, J Zhang, H Xian - Photonics, 2024 - mdpi.com
To satisfy the demands of high image quality and resolutions, telescope alignment is
indispensable. In this paper, a wavefront sensorless method based on a modified stochastic …
indispensable. In this paper, a wavefront sensorless method based on a modified stochastic …
Photonic lantern wavefront reconstruction in a multi-wavefront sensor single-conjugate adaptive optics system
AR Sengupta, J Diaz, BL Gerard… - arXiv preprint arXiv …, 2024 - arxiv.org
Exoplanet direct imaging using adaptive optics (AO) is often limited by non-common path
aberrations (NCPAs) and aberrations that are invisible to traditional pupil-plane wavefront …
aberrations (NCPAs) and aberrations that are invisible to traditional pupil-plane wavefront …
Deep learning-based focal plane wavefront sensing for exoplanet imaging
M Quesnel - 2024 - search.proquest.com
Exoplanet imaging presents significant challenges due to the extreme contrast and close
angular separation between exoplanets and their host stars. Although coronagraphs and …
angular separation between exoplanets and their host stars. Although coronagraphs and …
Reconstruction methods for the phase-shifted Zernike wavefront sensor
V Chambouleyron, M Cissé, M Salama… - … Optics Systems IX, 2024 - spiedigitallibrary.org
The Zernike wavefront sensor (ZWFS) stands out as one of the most sensitive optical
systems for measuring the phase of an incoming wavefront, reaching photon efficiencies …
systems for measuring the phase of an incoming wavefront, reaching photon efficiencies …
[PDF][PDF] The photonic lantern in a multi-wavefront sensorsingle-conjugate adaptive optics system
AR Sengupta, J Diaz, BL Gerard, R Jensen-Clem… - 2024 - osti.gov
Exoplanet direct imaging using adaptive optics (AO) is often limited by non-common path
aberrations (NCPAs) and aberrations that are invisible to traditional pupil-plane wavefront …
aberrations (NCPAs) and aberrations that are invisible to traditional pupil-plane wavefront …
Quantitative Wavefront Sensing with Static Foucault and Pyramid Tests
FM Henault, Y Feng, A Spang, L Schreiber - Available at SSRN 5025551 - papers.ssrn.com
Wavefront sensors (WFS) are now core components in the fields of metrology of optical
systems, biomedical optics and adaptive optics systems for astronomy. Nowadays, the most …
systems, biomedical optics and adaptive optics systems for astronomy. Nowadays, the most …