Adaptive compensation of dynamic wavefront aberrations based on blind optimization technique

Vladimir I. Polejaev; Pierre R. Barbier; Gary W. Carhart; Mark L. Plett; David W. Rush; Mikhail A. Vorontsov

doi:10.1117/12.367580

3 November 1999 Adaptive compensation of dynamic wavefront aberrations based on blind optimization technique

Vladimir I. Polejaev, Pierre R. Barbier, Gary W. Carhart, Mark L. Plett, David W. Rush, Mikhail A. Vorontsov

Proceedings Volume 3760, High-Resolution Wavefront Control: Methods, Devices, and Applications; (1999) https://doi.org/10.1117/12.367580
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

In this paper, we present experimental results of dynamic aberration correction based on gradient descend algorithms. The experimental setup included a 37-actuators piezoelectric deformable mirror to distort dynamically an input laser beam and a 37-element micromachined deformable membrane mirror to correct the resulting wavefront distortions. We generated time-varying aberrations using the first mirror and used the light power focused onto a pinhole as our optimization matrix. We programmed a computer to maximize this metric and control the shape of the micromachined deformable membrane mirror for wavefront correction. We implemented in this computer a simple gradient descend algorithm and a stochastic perturbation gradient descent algorithm. We present experimental data on the convergence and stability of this adaptive system for various conditions of dynamic turbulence.

Citation Download Citation

Vladimir I. Polejaev, Pierre R. Barbier, Gary W. Carhart, Mark L. Plett, David W. Rush, and Mikhail A. Vorontsov "Adaptive compensation of dynamic wavefront aberrations based on blind optimization technique", Proc. SPIE 3760, High-Resolution Wavefront Control: Methods, Devices, and Applications, (3 November 1999); https://doi.org/10.1117/12.367580

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