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Functional reconstruction of blooming Strehl ratios

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Abstract

Compensated Strehl-ratio predictions for a finite-sized beam in the presence of thermal blooming and atmospheric turbulence can be obtained from infinite-beam results by use of a propagation reconstruction theory and the exact analytic solution to the thermal blooming problem. From this exact solution of the linear theory for the structure functions in nonuniform atmospheres, we have developed analytical functional scaling of absorption profiles. We have used this analytic scaling to develop a fast and accurate systems model for the whole-beam Strehl ratio. The results from this systems model, taking only seconds on a microcomputer, agree with the exact analytic theory and with nonlinear four-dimensional wave-optics simulations.

© 1994 Optical Society of America

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