Multisegment coherent beam combining

Daniel R. Neal; Steve D. Tucker; R. Morgan; Tony G. Smith; Mial E. Warren; James K. Gruetzner; R. R. Rosenthal; A. E. Bentley

doi:10.1117/12.217727

25 August 1995 Multisegment coherent beam combining

Daniel R. Neal, Steve D. Tucker, R. Morgan, Tony G. Smith, Mial E. Warren, James K. Gruetzner, R. R. Rosenthal, A. E. Bentley

Author Affiliations +

Proceedings Volume 2534, Adaptive Optical Systems and Applications; (1995) https://doi.org/10.1117/12.217727
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Scaling laser systems to large sizes for power beaming and other applications can sometimes be simplified by combining a number of smaller lasers. However, to fully utilize this scaling, coherent beam combination is necessary. This requires measuring and controlling each beam's pointing and phase relative to adjacent beams using an adaptive optical system. We have built a sub-scale brass-board to evaluate various methods for beam-combining. It includes a segmented adaptive optic and several different specialized wavefront sensors that are fabricated using diffractive optics methods. We have evaluated a number of different phasing algorithms, including hierarchical and matrix methods, and have demonstrated phasing of several elements. The system is currently extended to a large number of segments to evaluate various scaling methodologies.

Citation Download Citation

Daniel R. Neal, Steve D. Tucker, R. Morgan, Tony G. Smith, Mial E. Warren, James K. Gruetzner, R. R. Rosenthal, and A. E. Bentley "Multisegment coherent beam combining", Proc. SPIE 2534, Adaptive Optical Systems and Applications, (25 August 1995); https://doi.org/10.1117/12.217727

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