AO4ELT5 Proceedings

A novel laser guide star: Projected Pupil Plane Pattern

Yang, Huizhe (durham univeristy), Barmal, Nazim (durham univeristy), Myers, Richard (durham univeristy), Buscher, David (University of Cambridge), Kellerer, Aglae (ESO), Morris, Tim (durham univeristy), Basden, Alastair (durham univeristy)

A new LGS configuration termed Projected Pupil Plane Pattern (P4), together with the corresponding wavefront sensing and reconstruction method, is presented. A theoretical analysis and Monto Carlo simulation show the feasibility of this novel method for a 4m-class telescope and great promise for the next generation of ELTs. Also we carry out a simple laboratory test with only defocus aberration and compare the reconstructed phase with the corresponding result from a Shack-Hartmann WFS. A further high-order experiment will follow, as well as plans for an on-sky test at William Herschel Telescope (WHT), La Palma

DOI: 10.26698/AO4ELT5.0079- Proceeding PDF

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