Comparison of a Shack-Hartmann and distorted grating wavefront sensor using WaveTrain simulation software

Gavin R. G. Erry; Paul Harrison; Leonard John Otten; Lawrence D. Weaver

doi:10.1117/12.584584

11 November 2004 Comparison of a Shack-Hartmann and distorted grating wavefront sensor using WaveTrain simulation software

Gavin R. G. Erry, Paul Harrison, Leonard John Otten, Lawrence D. Weaver

Author Affiliations +

Proceedings Volume 5572, Optics in Atmospheric Propagation and Adaptive Systems VII; (2004) https://doi.org/10.1117/12.584584
Event: Remote Sensing, 2004, Maspalomas, Canary Islands, Spain

Abstract

The concept of a curvature-based wavefront sensor using a distorted grating as the imaging element to capture images of two spatially separated planes onto a single detector has been reported previously. This presentation reports on simulations comparing a Shack-Hartmann (S-H) sensor with a distorted grating wavefront sensor (DGWFS) for a generic adaptive optics (AO) system using a Clear-1 atmospheric model. Using WaveTrain^TM simulation software a model of the DGWFS has been developed and integrated into the software. A simulation of a complete AO system including a tip/tilt system, high order correction system, atmospheric model, and a back-propagating laser system has been constructed. The model has then been exercised using various seeing conditions, noise levels, WFS sensitivities, camera systems, and other parameters. A comparison between the performance of the AO system using the S-H sensor and the DGWFS is presented, both in terms of wavefront measurement accuracy, image quality, and as a beam delivery system.

Citation Download Citation

Gavin R. G. Erry, Paul Harrison, Leonard John Otten, and Lawrence D. Weaver "Comparison of a Shack-Hartmann and distorted grating wavefront sensor using WaveTrain simulation software", Proc. SPIE 5572, Optics in Atmospheric Propagation and Adaptive Systems VII, (11 November 2004); https://doi.org/10.1117/12.584584

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