3D mapping of turbulence: a laboratory experiment

Miska Le Louarn; Christopher Dainty; Carl Paterson; Michel Tallon

doi:10.1117/12.390367

7 July 2000 3D mapping of turbulence: a laboratory experiment

Miska Le Louarn, Christopher Dainty, Carl Paterson, Michel Tallon

Proceedings Volume 4007, Adaptive Optical Systems Technology; (2000) https://doi.org/10.1117/12.390367
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

In this paper, we present the first experimental results of the 3D mapping method. 3D mapping of turbulence is a method to remove the cone effect with multiple laser guide stars and multiple deformable mirrors. A laboratory experiment was realized to verify the theoretical predictions. The setup consisted of two turbulent phase screens (made with liquid crystal devices) and a Shack-Hartmann wavefront sensor. We describe the interaction matrix involved in reconstructing Zernike commands for multiple deformable mirror from the slope measurements made from laser guide stars. It is shown that mirror commands can indeed be reconstructed with the 3D mapping method. Limiting factors of the method, brought to light by this experiment are discussed.

Citation Download Citation

Miska Le Louarn, Christopher Dainty, Carl Paterson, and Michel Tallon "3D mapping of turbulence: a laboratory experiment", Proc. SPIE 4007, Adaptive Optical Systems Technology, (7 July 2000); https://doi.org/10.1117/12.390367

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