Automatic calibration of a phase diversity wavefront sensing and control testbed

James A. Georges III; Pam Dorrance; Kurt Gleichman; Julie Jonik; Dean Liskow; Harold Lapprich; Vipul Naik; Stuart Parker; Rick Paxman; Matt Warmuth; Aaron Wilson; Tom Zaugg

doi:10.1117/12.732193

27 September 2007 Automatic calibration of a phase diversity wavefront sensing and control testbed

James A. Georges III, Pam Dorrance, Kurt Gleichman, Julie Jonik, Dean Liskow, Harold Lapprich, Vipul Naik, Stuart Parker, Rick Paxman, Matt Warmuth, Aaron Wilson, Tom Zaugg

Author Affiliations +

Proceedings Volume 6711, Advanced Wavefront Control: Methods, Devices, and Applications V; 671106 (2007) https://doi.org/10.1117/12.732193
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

This paper will report on efforts to automatically calibrate in situ a phase-diversity (PD) wavefront sensing and control (WFS&C) system, the results of which are demonstrated on the General Dynamics Advanced Information System's (GDAIS') QuickStar testbed¹, a dual deformable mirror (DM) system which operates at 100Hz sampling rate. The iterative automatic calibration (AutoCal) process includes both coarse and fine calibration modes, initial closed-loop flattening of the commercial-off-the-shelf (COTS) DMs, estimation of the system's static wavefront - including DM print-through, determination of PD-derived actuator influence functions, formulating the resulting system matrix and the resulting forward-model parameters. Analyses of the system after the calibration routines shows low-order WFS accuracy of ~0.005λ RMS and closed-loop residual wavefront measurement of ~0.002λ. All of these results were accomplished with a software package that takes on the order of one hour to operate.

Citation Download Citation

James A. Georges III, Pam Dorrance, Kurt Gleichman, Julie Jonik, Dean Liskow, Harold Lapprich, Vipul Naik, Stuart Parker, Rick Paxman, Matt Warmuth, Aaron Wilson, and Tom Zaugg "Automatic calibration of a phase diversity wavefront sensing and control testbed", Proc. SPIE 6711, Advanced Wavefront Control: Methods, Devices, and Applications V, 671106 (27 September 2007); https://doi.org/10.1117/12.732193

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