Performance scaling laws for adaptive optics systems

Larry E. Goad

doi:10.1117/12.152653

25 August 1993 Performance scaling laws for adaptive optics systems

Larry E. Goad

Proceedings Volume 1920, Active and Adaptive Optical Components and Systems II; (1993) https://doi.org/10.1117/12.152653
Event: 1993 North American Conference on Smart Structures and Materials, 1993, Albuquerque, NM, United States

Abstract

A performance prediction model for ground-based adaptive optics systems has been developed which permits the optimization of the spatial and temporal system response at a fixed throughput. The temporal response of the system is approximated to be that of a single-pole filter with a time constant (tau) . Approximate fits to actuator influence functions are used to model the adaptive mirror response, which is included as a high-pass spatial filter of the incident wavefront. The incident wavefront is also assumed to be spatially filtered by the sampling apertures of the wavefront sensor. The computed rms deviation of the corrected wavefront is used as the system performance measure. This system performance is parameterized in terms of the throughput a²v(tau) , where a is the actuator spacing and subaperture size and v is the pseudo-wind speed characteristic of the turbulence producing the wavefront aberrations, and the ratio of the temporal and spatial sampling intervals v(tau) /a. For large aperture telescopes with D >> r₀, the performance curves are found to be independent of D and the optimal spatial and temporal bandwidths may be readily selected for the desired throughput, this parameterization provides a simple means of evaluating total system performance from typical wavefront sensor noise models.

Citation Download Citation

Larry E. Goad "Performance scaling laws for adaptive optics systems", Proc. SPIE 1920, Active and Adaptive Optical Components and Systems II, (25 August 1993); https://doi.org/10.1117/12.152653

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