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Proceedings Paper

Multisegment coherent beam combining
Author(s): Daniel R. Neal; Steve D. Tucker; R. Morgan; Tony G. Smith; Mial E. Warren; James K. Gruetzner; R. R. Rosenthal; A. E. Bentley
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Paper 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.

Paper Details

Date Published: 25 August 1995
PDF: 14 pages
Proc. SPIE 2534, Adaptive Optical Systems and Applications, (25 August 1995); doi: 10.1117/12.217727
Show Author Affiliations
Daniel R. Neal, Sandia National Labs. (United States)
Steve D. Tucker, Sandia National Labs. (United States)
R. Morgan, Sandia National Labs. (United States)
Tony G. Smith, Sandia National Labs. (United States)
Mial E. Warren, Sandia National Labs. (United States)
James K. Gruetzner, Sandia National Labs. (United States)
R. R. Rosenthal, Sandia National Labs. (United States)
A. E. Bentley, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 2534:
Adaptive Optical Systems and Applications
Robert K. Tyson; Robert Q. Fugate, Editor(s)

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