Influence of atmospheric turbulence on the Zernike phase contrast method and the first steps towards the phasing of
segmented deformable mirrors

I. Surdej; E. Romnée; R. Bastaits; A. Preumont; N. Yaitskova; L. Noethe

doi:10.1117/12.926473

13 September 2012 Influence of atmospheric turbulence on the Zernike phase contrast method and the first steps towards the phasing of segmented deformable mirrors

I. Surdej, E. Romnée, R. Bastaits, A. Preumont, N. Yaitskova, L. Noethe

Author Affiliations +

Proceedings Volume 8447, Adaptive Optics Systems III; 84476L (2012) https://doi.org/10.1117/12.926473
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

The Zernike phase contrast sensor has been studied in the framework of the Active Phasing Experiment in the laboratory and on sky at the Very Large Telescope. Atmospheric turbulence strongly affects the shape of the signal of the Zernike phase contrast sensor. The first part of these proceedings is dedicated to a study of the influence of atmospheric turbulence on the signal of the Zernike phase contrast sensor. The second part is dedicated to the phasing of segmented deformable mirrors. A new technology of segmented deformable mirrors for adaptive optics made from silicon wafers with bimorph piezoelectric actuation has been proven to work. A demonstrator with three hexagonal segments of 90 mm corner to corner has been built. The morphing capability of the segmented mirror has been studied and validated by simulations and on a test bench. In this paper, we demonstrate with simulations the phasing of the segmented bimorph mirror with the Zernike phase contrast method. Aspects such as phasing in the presence of segment aberrations have been investigated.

Citation Download Citation

I. Surdej, E. Romnée, R. Bastaits, A. Preumont, N. Yaitskova, and L. Noethe "Influence of atmospheric turbulence on the Zernike phase contrast method and the first steps towards the phasing of segmented deformable mirrors", Proc. SPIE 8447, Adaptive Optics Systems III, 84476L (13 September 2012); https://doi.org/10.1117/12.926473

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available