Computational methods to compute wavefront error due to aero-optic effects

Victor Genberg; Gregory Michels; Keith Doyle; Mark Bury; Thomas Sebastian

doi:10.1117/12.2024065

27 September 2013 Computational methods to compute wavefront error due to aero-optic effects

Victor Genberg, Gregory Michels, Keith Doyle, Mark Bury, Thomas Sebastian

Proceedings Volume 8840, Optical Modeling and Performance Predictions VI; 88400A (2013) https://doi.org/10.1117/12.2024065
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

Aero-optic effects can have deleterious effects on high performance airborne optical sensors that must view through turbulent flow fields created by the aerodynamic effects of windows and domes. Evaluating aero-optic effects early in the program during the design stages allows mitigation strategies and optical system design trades to be performed to optimize system performance. This necessitates a computationally efficient means to evaluate the impact of aero-optic effects such that the resulting dynamic pointing errors and wavefront distortions due to the spatially and temporally varying flow field can be minimized or corrected. To this end, an aero-optic analysis capability was developed within the commercial software SigFit that couples CFD results with optical design tools. SigFit reads the CFD generated density profile using the CGNS file format. OPD maps are then created by converting the three-dimensional density field into an index of refraction field and then integrating along specified paths to compute OPD errors across the optical field. The OPD maps may be evaluated directly against system requirements or imported into commercial optical design software including Zemax® and Code V® for a more detailed assessment of the impact on optical performance from which design trades may be performed.

Citation Download Citation

Victor Genberg, Gregory Michels, Keith Doyle, Mark Bury, and Thomas Sebastian "Computational methods to compute wavefront error due to aero-optic effects", Proc. SPIE 8840, Optical Modeling and Performance Predictions VI, 88400A (27 September 2013); https://doi.org/10.1117/12.2024065

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KEYWORDS

Chemical elements

Integrated optics

Adaptive optics

Near field optics

Wavefronts

Optical components

Error analysis

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