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Proceedings Paper

Wavefront control model of a beam control experiment
Author(s): Amy Jo Cielinski
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Paper Abstract

Wavefront control modeling is an important technique for examining the steady state performance and design tradeoffs of many types of beam control systems. The present paper discusses a model for simulating a wide field of view laser projection beam control brassboard experiment. The simulation is designed to optimize system performance over the full field of view during brassboard operation. Simulation results will be utilized to define a minimum set of standard viewing angles at which the brassboard experiment will need to be calibrated. During the experiment, the computer software will interpolate between these discrete calibration angles to obtain the information required to operate at any angle over the full field of view. In the brassboard experiment wavefront sampling is achieved with a Hartmann type outgoing wavefront sensor, which receives slope information from 48 holographic optical elements on the primary minor. Optical aberrations are corrected by a 97 actuator deformable mirror. Key elements of the simulation are: 1) a deformable minor model constructed from NASTRAN generated actuator influence functions, 2) an outgoing wavefront sensor model which computes average slope values over the holographic optical elements, and 3) submodels for all budgeted beam control subsystem, sensor and diagnostics error sources. Critical analyses discussed include the characterization of the calibration/interpolation geometry and the expected performance effects as a function of field of view.

Paper Details

Date Published: 1 December 1991
PDF: 15 pages
Proc. SPIE 1542, Active and Adaptive Optical Systems, (1 December 1991); doi: 10.1117/12.48827
Show Author Affiliations
Amy Jo Cielinski, W.J. Schafer Associates, Inc. (United States)


Published in SPIE Proceedings Vol. 1542:
Active and Adaptive Optical Systems
Mark A. Ealey, Editor(s)

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