Tracking and higher-order correction tradeoffs for beam correction through strong turbulence

Byron M. Welsh; Michael C. Roggemann; Andrew Schepler

doi:10.1117/12.409308

17 November 2000 Tracking and higher-order correction tradeoffs for beam correction through strong turbulence

Byron M. Welsh, Michael C. Roggemann, Andrew Schepler

Proceedings Volume 4125, Propagation and Imaging through the Atmosphere IV; (2000) https://doi.org/10.1117/12.409308
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

The problem of optimally pointing a laser beam is commonly referred to as the tracking problem. Accurately pointing the beam in the presence of scintillated atmospheric conditions is difficult. The objective here is to understand the limitations of how well we can point a laser beam to a target point under long path, scintillated conditions. We investigate performance for both the case of tilt-only compensation and tilt compensation used in conjunction with higher order compensation. For the scintillated conditions considered here we find that only when we considered higher order compensation in conjunction with tracking do we see benefit from tracking. This leads us to claim that the tracking problem is difficult, if not impossible, to decouple form the high order compensation problem for the scintillated conditions considered in this work.

Citation Download Citation

Byron M. Welsh, Michael C. Roggemann, and Andrew Schepler "Tracking and higher-order correction tradeoffs for beam correction through strong turbulence", Proc. SPIE 4125, Propagation and Imaging through the Atmosphere IV, (17 November 2000); https://doi.org/10.1117/12.409308

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