23 August 2005 The diffractive limits of atmospheric compensation and laser guide star return initial conditions
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Abstract
The symmetry operation associated with propagation reciprocity is complex conjugation and adaptive optics is used to physically carry out this symmetry operation. We use a plane-to-plane framework to describe the fundamental limits placed on implementing propagation reciprocity that arise due to diffraction. Compensation system performance is often analyzed using the ray optics limit (e.g. defining the isoplanatic angle). This limits the applicability of such results by ignoring the diffractive limits on the ability to sense the laser guide star phase and amplitude information. We describe how the diffractive limits of phase-only and full-field compensation arise in terms of this flow of information. The plane-to-plane framework also shows the role of the beacon initial conditions as the end result of complete spatial reciprocity.
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S. Enguehard, S. Enguehard, Brian Hatfield, Brian Hatfield, L. Whiting, L. Whiting, } "The diffractive limits of atmospheric compensation and laser guide star return initial conditions", Proc. SPIE 5895, Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation II, 58950A (23 August 2005); doi: 10.1117/12.621109; https://doi.org/10.1117/12.621109
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