On the modal throughput of photonic lanterns in the presence of partial adaptive optic correction

Performance of the W.M. Keck Observatory Natural Guide Star Adaptive Optic Facility: the first year at the telescope

10.1117/12.390368 ◽

2000 ◽

Cited By ~ 56

Author(s):

Peter L. Wizinowich ◽

D. Scott Acton ◽

Olivier Lai ◽

John Gathright ◽

William Lupton ◽

...

Keyword(s):

Adaptive Optic ◽

First Year ◽

Guide Star

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Status of the NGS adaptive optic system at the MMT Telescope

10.1117/12.552478 ◽

2004 ◽

Cited By ~ 2

Author(s):

Douglas L. Miller ◽

Guido Brusa ◽

Matthew A. Kenworthy ◽

Philip M. Hinz ◽

Don L. Fisher

Keyword(s):

Adaptive Optic ◽

Optic System ◽

Adaptive Optic System

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Passive Shear Layer Regularization Experiments in Wind Tunnels and Feed-Forward Adaptive-Optic Correction

47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition ◽

10.2514/6.2009-358 ◽

2009 ◽

Cited By ~ 2

Author(s):

Donald Wittich ◽

Daniel Duffin ◽

Eric Jumper ◽

Alan Cain ◽

Edward Kerschen

Keyword(s):

Shear Layer ◽

Adaptive Optic ◽

Wind Tunnels ◽

Feed Forward

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Numerical Simulation of Target-in-the-Loop Adaptive Optic Systems Based on Fiber-Laser Array

Acta Optica Sinica ◽

10.3788/aos201131.1114002 ◽

2011 ◽

Vol 31 (11) ◽

pp. 1114002

Author(s):

陶汝茂 Tao Rumao ◽

司磊 Si Lei ◽

马阎星 Ma Yanxing ◽

邹永超 Zou Yongchao ◽

周朴 Zhou Pu

Keyword(s):

Numerical Simulation ◽

Fiber Laser ◽

Adaptive Optic ◽

Laser Array ◽

Optic Systems

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H∞ Suboptimal controller design for adaptive optic systems

Transactions of the Institute of Measurement and Control ◽

10.1177/0142331218780217 ◽

2018 ◽

Vol 41 (8) ◽

pp. 2100-2113

Author(s):

Bilal Erol ◽

Berk Altıner ◽

Erkan Adalı ◽

Akın Delibaşı

Keyword(s):

Atmospheric Turbulence ◽

Disturbance Rejection ◽

Controller Design ◽

Adaptive Optic ◽

Wavefront Aberrations ◽

Alternative Approach ◽

Specific Frequency ◽

Balanced Model ◽

Optic Systems ◽

Orthogonal Set

In this paper, an alternative approach to conventional [Formula: see text] control is proposed for adaptive optic (AO) systems. In order to account for the dynamics of the deformable mirror (DM), the Kirchhoff plate equation is considered. Phase wavefront aberrations, which are the effect of atmospheric turbulence, are modelled using the orthogonal set of Zernike polynomials. The first part of this study concerns the derivation of mathematical models for the DM and the atmospheric turbulence. The AO systems used for disturbance rejection concentrate on a specific frequency band, as the disturbance occurs in that region. However, the conventional weighted [Formula: see text] controller is not applicable due to its order. The proposed controller handles this problem by using frequency weighted balanced model reduction. The efficiency of the proposed approach is examined on Zernike’s tip and tilt, focus, astigmatism, coma, trefoil, spherical, secondary astigmatism and quadrafoil modes.

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