Paper
25 August 1993 Multiple laser beam combining and phasing using closed-loop control
Daniel R. Neal, Tony G. Smith, G. Richard Eisler, J. L. Wilcoxen, R. R. Rosenthal
Author Affiliations +
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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daniel R. Neal, Tony G. Smith, G. Richard Eisler, J. L. Wilcoxen, and R. R. Rosenthal "Multiple laser beam combining and phasing using closed-loop control", Proc. SPIE 1920, Active and Adaptive Optical Components and Systems II, (25 August 1993); https://doi.org/10.1117/12.152661
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CITATIONS
Cited by 2 scholarly publications.
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KEYWORDS
Sensors

Wavefront sensors

Actuators

Mirrors

Control systems

Image segmentation

Ferroelectric materials

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