Want to improve your cascade 2-stage AO system? Turn it into a high-performance woofer-tweeter!

Henri-François Raynaud; Caroline Kulcsár; Nelly Cerpa-Urra; Markus Kasper

doi:10.1364/AOA.2022.OTh4B.1

Imaging and Applied Optics Congress 2022 (3D, AOA, COSI, ISA, pcAOP)
Technical Digest Series (Optica Publishing Group, 2022),
paper OTh4B.1
•https://doi.org/10.1364/AOA.2022.OTh4B.1

Want to improve your cascade 2-stage AO system? Turn it into a high-performance woofer-tweeter!

Henri-François Raynaud, Caroline Kulcsár, Nelly Cerpa-Urra, and Markus Kasper

Adaptive Optics and Applications 2022

Vancouver, British Columbia Canada
11–15 July 2022
ISBN: 978-1-957171-09-8

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Wavefront Correction and Industrial Innovation (OTh4B)

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H. Raynaud, C. Kulcsár, N. Cerpa-Urra, and M. Kasper, "Want to improve your cascade 2-stage AO system? Turn it into a high-performance woofer-tweeter!," in Imaging and Applied Optics Congress 2022 (3D, AOA, COSI, ISA, pcAOP), Technical Digest Series (Optica Publishing Group, 2022), paper OTh4B.1.

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Abstract

2-stage cascade AO (CAO) systems enable to improve wavefront correction for high-contrast exoplanet imaging. However, 1^st stage residuals entering the 2^nd stage exhibit see-saw high-frequency oscillations. We propose a compensation procedure which turns the CAO into a woofer-tweeter configuration, thus significantly improving overall performance.

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