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Proceedings Paper

Multiple laser beam combining and phasing using closed-loop control
Author(s): Daniel R. Neal; Tony G. Smith; G. Richard Eisler; J. L. Wilcoxen; R. R. Rosenthal
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Paper Abstract

One method for scaling lasers to higher power is to build several separate amplifier chains, and then coherently combine the individual beams together. To combine the beams the pathlengths must be matched to an integer number of waves, and the tip and tilt of each beam must be the same. Since optical tolerances are fractional micrometers, a sophisticated control system must be employed to actively measure tip/tilt and piston errors, and apply real time corrections. We have developed a test bed that allows us to develop the required control algorithms for two to four beams and then scale to a larger number.

Paper Details

Date Published: 25 August 1993
PDF: 11 pages
Proc. SPIE 1920, Active and Adaptive Optical Components and Systems II, (25 August 1993); doi: 10.1117/12.152661
Show Author Affiliations
Daniel R. Neal, Sandia National Labs. (United States)
Tony G. Smith, Sandia National Labs. (United States)
G. Richard Eisler, Sandia National Labs. (United States)
J. L. Wilcoxen, Sandia National Labs. (United States)
R. R. Rosenthal, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 1920:
Active and Adaptive Optical Components and Systems II
Mark A. Ealey, Editor(s)

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