We describe and demonstrate an adaptive optical system based on the combination of a micromachined membrane deformable mirror and the stochastic parallel gradient descent control algorithm. This compact and relatively inexpensive adaptive optical system is used to maximize the coupling of a distorted laser beam into a single-mode optical fiber. The coupling efficiency is improved by 12 dB, and the coupling efficiency after correction is 64% of the diffraction-limited coupling efficiency.
© 2001 Optical Society of America
Mark L. Plett, Pierre R. Barbier, and David W. Rush, "Compact Adaptive Optical System Based on Blind Optimization and a Micromachined Membrane Deformable Mirror," Appl. Opt. 40, 327-330 (2001)